1. Some people believe that criminals who plead guilty will get different sentences than if their case goes to trial. The following table summarizes data from a random sample of San Francisco defendants in burglary cases. Pleas by Sentencing Fate Guilty Plea Not Guilty Plea Sent to Prison 392 58 Not sent to Prison 564 14 Write the appropriate hypotheses to test whether or not the plea is associated with the sentencing fate. (don't actually do the test) a.

Q: decided not to go to college because they could not

A: Given : Sample size = n = 331 Sample proportion = p̂= 0.48

Q: If you use a 0.05 level of significance in a​ two-tail hypothesis​ test, what decision will you make…

A:

Q: Minnesota had the highest turnout rate of any state for the 2012 Presidential election (United…

A: Given : x1 = 663 n1 = 884 x2 = 414 n2 = 575

Q: 10) In 2015, the average math SAT score for students at South Hanover High School was 520. Five…

A: Given that, the average math SAT score of students at the school is not equal to 520, but the result…

Q: n general, if sample data are such that the null hypothesis is rejected at the ? = 1% level of…

A: α = 1% or 0.01   ___________________________    P-value (One Tailed ) = P-value (2 Tailed)2

Q: In a psychology experiment 130 students were classified by major (sciences or humanities) and if…

A: we do this by χ2testH0: choice of major and right/left handedness are independent H1: choice of…

Q: (c) Carry out an appropriate hypothesis test at a = 0.05 to see whether the 2016 census proportions…

A: Given : Samples :

Q: 3. A researcher wants to count the number of apps people have downloaded on their phones. Here is…

A: It is been asked to test whether there is significant difference in the mean number of downloaded…

Q: A mayor is concerned about the percentage of city residents who express disapproval of his job…

A: The mayor pays the newspaper and expects that his disapproval rating will be less than 21% Here, p =…

Q: 7. Refer to the Bayer Aspirin problem: a) Suppose the hypothesis-testing problem was changed to a…

A: According to the given information  Null hypothesis The hypothesis that there is no significant…

Q: According to the Centers for Disease Control and Prevention, 9.7% of high school students currently…

A:

Q: After a product recall, a company solicits feedback from a random sample of 100 customers regarding…

A: Given data: Sample size  =100 To find: Appropriate Hypotheses :

Q: respond favorably to a new advertisement than the people in the western part of her country. She…

A:

Q: IDENTIFY THE NULL AND ALTERNATIVE HYPOTHESES. DO WE FAIL TO REJECT OR REJECT THE NULL HYPOTHESIS?

A:

Q: Define the null hypothesis and the alternative hypothesis.

A: There are two qualitative variable, one is satisfaction and other is age.

Q: What are the hypotheses for evaluating if the average spam emails per day has changed from 2004 to…

A: Provided information is, the 2004 National Technology Readiness Survey sponsored by the Smith School…

Q: 3. A researcher wants to count the number of apps people have downloaded on their phones. Here is…

A: Given data, San Francisco Los Angeles Chicago New york 48 25 14 30 37 32 35 22 57 30 29 40…

Q: freshmen business majors? 366 of the 673 freshmen psychology majors from a recent study changed…

A: From the given information we conduct z test for two proprtion.

Q: 6.16 Is college worth it? Part I. Among a simple random sample of 331 American adults who do not…

A: sample size, n = 331 American adults Point estimate : p^ = 0.48   a) Minority of students means…

Q: 1- An advertisement firm is making a new marketing strategy and selling rates are being considered.…

A:

Q: pose that in a follow-up study of 40 staff nurses in Tampa and 50 staff nurses in Dallas you min the…

A:

Q: 2) A research team was interested in whether life satisfaction differed between older (> 65 years…

A: Hi! Thank you for the question. AS per the honor code, we are allowed to answer the three sub-parts…

Q: Solve the problem. 16) A researcher believes (claims) that children who attend elementary school in…

A: State the given values. where 1 is for rural 2 is for urban

Q: Massachusetts Institute of Technology grants pirate certificates to those students who successfully…

A: Claim: Test the claim that those students who go on to earn pirate certificates are able to hit a…

Q: 18% of all college students volunteer their time. Is the percentage of college students who are…

A: a. A study if 18% of all students volunteer their time and the claim of the test is the percentage…

Q: A school principal claims that 40% of the students of the school are dissatisfied by the community…

A: Given : Claim : 40% of the students of the school are dissatisfied by the community.  The sample…

Q: 7. According to the February 2008 Federal Trade Commission report on consumer fraud and identity…

A: Solution: Given information: n= 1435 Sample size of complaints  x= 322 complaints of identity theft…

Q: After a product recall, a company solicits feedback from a random sample of 100 customers regarding…

A: Chi square test

Q: 5.25 Cleveland vs. Sacramento: Average income varies from one region of the country to another, and…

A: we have two groups and since the cities are different hence we shall have different variance so if…

Q: About 778000 male and 886000 female high school students took the SAT in 2012. We suspect the…

A: Hi, we are supposed to answer three subparts at a time. Since you have not mentioned which subpart…

Q: 8. Refer to the Bayer Aspirin problem: How would the alternate hypothesis be written symbolically if…

A:

Q: 6.16 Is college worth it? Part I:  Among a simple random sample of 331 American adults who do not…

A: Given: The sample number of American adults is n=331. The proportion of adults who decided not to go…

Q: Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be…

A: Given three statements. We have to choose which of the statements might represent a null hypothesis.…

Q: If you use a 0.02 level of significance in (two-tail) hypothesis test, what is your decision for…

A: Here, α=0.02 Hypotheses: H0:μ=750Ha:μ≠750

Q: According to the National Beer Wholesalers Association, U.S. consumers 21 years and older consumed…

A: Answer : a) Null and alternative hypothesis as follows: This is a right tailed test.

Q: 3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On…

A:

Q: Are freshmen psychology majors more likely to change their major before they graduate compared to…

A:

Q: A newspaper reported the results of a survey on the planning habits of men and women. In response to…

A: The level of significance is 0.01.

Q: Exercises 1–5 refer to the sample data in the following table, which summarizes the last digits of…

A:

Q: 3. You are tasked with conducting a hypothesis test evaluating whether a majority or minority of…

A:

Q: The nicotine patch is an FDA-approved medicine that can help people quit smoking. To test the…

A: Null hypothesis: A hypothesis of no difference is called as null hypothesis. It is denoted by H0…

Q: Suppose we wanted to compare the average BMI of a sample of Charleston County residents to the…

A: Here, population mean is 26.5. From the above data we will find mean and standard deviation. We will…

Q: The Adecco Workplace Insights Survey sampled men and women workers and asked ifthey expected to get…

A: a. In a survey, 74 out of 200 women and 104 out of 200 men replied yes when they were asked that if…

Q: 5. In a certain county, the local newspaper reports that the average family income for that county…

A: We have to find correct pair of hypothesis for given right tailed test.

Q: Which is the correct answer? and why?  A researcher selects a sample from a population with a mean…

A: The given sample mean is 49. After the treatment is administered, the scores are expected to…

Q: 16. According to a food website, the mean consumption of popcorn annually by Americans is 63 quarts.…

A:

Q: According to the Centers of Disease Control, about 20% of American young people between the ages of…

A:

Q: 4. A corporate lawyer wonders whether the vigor of antitrust enforcement differed in the 2010s…

A: The Paired Samples Sign Test to compare the medians of two related  continuous populations, such as…

Q: A December 2017 Gallup Poll reported that 43% of Americans use the internet for an hour or more each…

A: Given : Let X : No. of students use an internet for an hour or more each day Sample size (n) =60 X =…

Q: Babies and younger boys are more likely to be diagnosed with peanut allergies. To test this claim a…

A: Given: Sample size for boys n1 =280 No. of boys diagnosed with peanut allergies, x1 =120 Sample size…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.