A psychology class consists of 32 freshmen and 48 sophomores. If the professor selects names from the class list using random sampling,
a. what is the probability that the first student selected will be a freshman?
b. and if a random sample of n 5 6 students is selected and the first five selected are sophomores, what is the probability that the sixth student selected will be a freshman?
c. Repeat question a (above) after 10 sophomore students join the class.

Answers

Answer 1

b. and if a random sample of n = 6 students is selected and the first five selected are sophomores, what is the probability that the sixth student selected will be a freshman?

Answer:

A) 0.4

B) 0.4267

C) 0.356

Explanation:

A) There are;

32 freshmen and 48 sophomores.

Thus, total number of students = 32 + 48 = 80 students.

Thus;

P(first student selected will be a freshman) = 32/80 = 0.4

B) Since there are 6 students randomly selected with the first 5 being sophomore, then;

After 5 sophomore students selected, we have;

(80 - 5) = 75 students left

Also, we have 32 freshmen.

Probability of the 6th being a fresh man which is the next selection is;

P(6th being a freshman) = 32/75 = 0.4267

C) if 10 sophomore students join, then total number of students is now;

80 + 10 = 90 students.

Thus;

P(first student selected will be a freshman after 10 sophomore students join) = 32/90 = 0.356


Related Questions

The struggle for equal rights is still ongoing. Minorities face many struggles in acquiring social, political, and economic equality. While de jure discrimination is easier to combat, de facto discrimination is very difficult to erase. The legacy of Jim Crow and other discriminatory practices can be seen today. The criminal justice system is heavily biased against minorities through both systemic and individual prejudices. For instance, Black defendants are more than 30% more likely to be sentenced to prison for the same crime committed by a similarly situated White defendant. This impacts opportunities not only for the individual, but also for their community and family. Minorities Make up approximately 30% of the population but make up around 60% of the prison population, even though minorities are no more likely to commit crimes than their white counterparts. Given these facts, what can be done

Answers

Answer:

Explanation:

While I feel I state the obvious; This stems from the institutionalized racism within our justice systems as well as our police and government officials. Educating ourselves is the biggest step, then educating others on this as well. From there, voting and calling our legislators is a good way to help. Advocating through social platforms if you have a large, or a small, is also a good way to help. We also need to demolish private prisons in America. That will do a lot for this particular cause.

I sadly believe that peaceful change is going to do much on this cause

I will give you brainliest and thanks and 5 stars if its correct :)

Answers

Popular Sovereignty

The power of government comes from people

Common Good

People working together for the good of everyone

Patriotism

To show love for our country

Answer:

Popular Sovereignty = The power from the government comes from people

Common Good = People working together for the good of everyone

Patriotism = To show love of our country

Read through the five characteristics of qualitative research again. Based on these characteristics, describe the ways that a qualitative research report will differ from a more traditional experimental report prepared in accepted American Psychological Association (APA) format

Answers

Answer and Explanation:

Some of the characteristics of qualitative research include:

1. Natural setting

2. Researcher is key instrument

3. Multiple methods

4. Focus on participants

5. Emergent design

1. Natural setting: This means that qualitative researchers collect their data from the field ie where the participant is naturally dwelling(sometimes without the participant's knowledge of the researcher). This is different from an experimental research that involves bringing participants to a lab in order to manipulate dependent variables and observe them with independent variables and extraneous variables. An experimental research would therefore have to report the effect of the independent variable on the dependent variable while a qualitative research would report participants behavior given variables in his natural dwelling.

2. Researcher is key instrument: a qualitative researcher is the main instrument of research as he does not make use of third party source of data or data collected by someone else such as use of questionnaires, he observes the participants directly in the field. An experimental researcher on the other hand makes use of the results of his experiment, cause and effect relationship of variables, in getting his data for analysis. Therefore the qualitative researcher and experimental researcher will report different sources/methods of data collection in their research report.

According to the Rescorla-Wagner theory of conditioning, blocking occurs because... Group of answer choices the CS has already taken up most of the available associative strength. familiar stimuli are more difficult to condition. the CS gathers more associative strength than the US. the US has already taken up most of the available associative strength.

Answers

Answer:

Explanation:

How does the Rescorla Wagner model explain the blocking effect?

This effect was most famously explained by the Rescorla–Wagner model. The model says, essentially, that if one CS (here the light) already fully predicts that the US will come, nothing will be learned about a second CS (here the tone) that accompanies the first CS.Robert Rescorla and Allen Wagner were the first to realize what about classical conditioning? ... those in a vegetative state showed trace conditioning but those who were unconscious did not.According to stimulus substitution theory, after pairing the new stimulus with the existing conditioned stimulus it is possible to replace the first CS with the new stimulus. For instance, you have conditioned a rat to respond to a whistle as a signal that it is about to be fed.

According to the Rescorla-Wagner theory of conditioning, blocking occurs because CS has already taken up most of the available associative strength. The correct option is A. The Rescorla-Wagner model claims that blocking happens because the CS added in the second phase offers no fresh or prognostic information.

What did Rescorla and Wagner show about conditioning?

The value of a paired trial as reinforcement decreases with increasing associative strength between the presented stimuli is a fundamental tenet of Rescorla and Wagner's model of associative learning.

Blocking and Unblocking predictions are one of the R-W model's most significant contributions. When a novel stimulus is presented alongside an established CS, blocking happens because the novel stimulus has no predictive value because it is novel.

Thus, the ideal selection is option A.

Learn more about the Rescorla-Wagner theory here:

https://brainly.com/question/14453430

#SPJ2

Jim asks Bob how he is feeling. Instead of replying verbally to Jim, Bob gives Jim a "thumbs up" to let him know that he is doing well. Sociologists would describe Bob's response to Jim as which of the following:


a. Gesture


b. Language


c. Sign


d. Symbol

Answers

Answer:

c. Sign

Explanation:

Mickey joins a guerilla band fighting the governemnt in some far away country. While in leading a squad of insurgents, he orders the death of every inhabitant of a small hamlet reportedly friendly to the government. Mickey is eventually captured and extradited to the Hague to face trial.
The purpose of Mickey's attack on the village was to create a state of extreme fear and dread amongst other villages who might support the government. Under this circumstance, Mickey would be charged with the:________.

Answers

Answer: crime of terrorizing

Explanation:

Terrorism is defined as the use of unlawful violence in order to inculcate fear which is done to intimidate the government or coerce them to agree to certain terms which are usually religious, or political.

Since the purpose of Mickey's attack on the village was to create a state of extreme fear and dread amongst other villages who might support the government, then he'll be charged with crime of terrorizing.

Other Questions
Need help please I dont understand this question Which situation could this expression represent?2082A:Malik has $20. He spends $8 and then doubles what he has left. How much money does Malik have now?B:Brennan has $20. He gives a friend $8. And another friend gives him $2. How much money does Brennan have now?C:Martin has $20. He buys 2 shirts that cost $8 each. How much money does Martin have left?D:Rupert has $20. He gives $8 to one friend and $2 to another friend. How much money does Rupert have left? The emission spectrum of hydrogen is shown below. What do the lines in thespectrum show?A. Light with wavelengths between 410 nm to 434 nm, 434 to 486 nm, and 486 to 656 nm corresponds with the three energy levels inhydrogenB. Only light with wavelengths of 410 nm, 434 nm, 486 nm, and 656 nm is not taken in during energy transitions.C. Light with wavelengths of 410 nm, 434 nm, 486 nm, and 656 no corresponds with the four energy levels in hydrogen.D. Light with wavelengths of 410 nm, 434 nm, 486 nm, and 656 nm is given off when electrons fall to lower energy levels. While some people play basketball professionally. Millions play basketball for fun.Which version of the sentence best emphasizes the subject?A. While some people play basketball professionally and millions play basketball for fun.B. While some people play basketball professionally, millions play basketball for fun.C. While some people play basketball professionally; Millions play basketball for fun.D. While some people play basketball professionally, but millions play basketball for fun. The Titanus beetle can measure 16710 centimeters in length, and the Giant Weta beetle can measure 8510 centimeters in length. How much longer is the Titanus than the Giant Weta? ratios that are equivalent to 7/6 How did the scientific revolution affect societies between the 17th and 19thcenturies? what is a example of clauses What is the original price of an item cost if the tax is 9.25% and the discount is 25% and the new price after discount and tax is $62.28? Find an expression which represents the difference when (-4x 3y) is subtractedfrom (-2x 10y) in simplest terms. A firm has an equity multiplier of 1.57, an unlevered cost of equity of 14 percent, a levered cost of equity of 15.6 percent, and a tax rate of 21 percent. What is the cost of debt Select the correct answer from each drop-down menu.The pancreas is an accessory organ whose function aids the chemical digestion of food.If the pancreas fails to make, it will inhibit the action of enzymes and affect chemical digestion. Also, might damage the small intestine walls. A hiker is standing 40 feet away from a tree that is 50 feet tall. What is the angle of elevation from the hikers foot to the top of the tree??HELP ME PLEASE ITS URGENT Elvis has asked Bonnie out of a date to a baseball game. Elvis is a friend of Bonnies classmate Ginger and she has met him a few times before. She wants to go to the baseball game but is concerned for her safety.What should Bonnie do before going out to best ensure her safety? Census data show that the human population doubled from 2.65 billion in 1953 to 5.3 billion in 1990. If it continues to double at this rate, the human population could reach 10 billion by the year 2020. Which best explains how this rate of human growth can harm the environment on which humans depend? A rectangle has an area of 4x-8x+3 square units. Which of the following could represent the perimeter of the rectangle in terms of x?a. 2x-1b. 2x-3c. 4x-4d. 8x-8e. 10x-8 Today, the population of Canyon Falls is 22{,}50022,50022, comma, 500 and the population of Swift Creek is 15{,}20015,20015, comma, 200. The population of Canyon Falls is decreasing at the rate of 740740740 people each year while the population of Swift Creek is increasing at the rate of 1{,}5001,5001, comma, 500 people each year. Assuming these rates continue into the future, in how many years from today will the population of Swift Creek equal twice the population of Canyon Falls I need help and dont understand, where does each chemical reaction go? A company in California sells a computer program to auto dealers showing that car buyers should finance their purchase rather than paying cash. The program omits the effect of income taxes and misstates the interest earned on savings over the load period. The finance option always provides a net benefit for the cash option. Company employees agree that the program does mislead buyers, but say the company will "provide what (car dealers) want as long as it is not against the law." Is this practice ethical? Is this practice socially responsible? what is entrapersonal environment