A politician believes that 60% of constituents are in favor of a particular issue. She takes a sample of 100 constituents and finds that 55 favor the issue. If you were to conduct a hypothesis test of this claim, what would be the decision rule?

Q: Source Between Within Total SS df MS F N/A

A: To test, the null and alternative hypotheses: Ho : Three programs produce same result Ha : At least…

Q: It is estimated that 3% of adults age 18 to 29 who have high blood pressure. You wish to test this…

A: We assign Null Hypothesis (H0) and Alternative Hypothesis (H1) The test statistic,…

Q: Oregonians really, really want a baseball team research group contacted a random sample of 5000…

A: 48% is a sample statistic

Q: Use the results from a survey of a simple random sample of 1256 adults. Among the 1256 ​respondents,…

A: The sample size is n=1256

Q: A statistician selects a sample of 20 participants and makes the decision to retain the null…

A: Given : Sample of 20 participants led to retain the null hypothesis Sample 100 participants led to…

Q: A research group conducted an extensive survey of 3116 wage and salaried workers on issues ranging…

A:

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

A: Given that,The total number of surveyed students is 64.Therefore, the sample size is The number of…

Q: Kelly performs a hypothesis test and calculates a p-value of .03 for her sample data. What decision…

A: We have to give conclusion.

Q: de reading level. An English teacher believes that the true figure is higher and with the help of an…

A: Given: Reading grade level (x) Number of pages (f) 5 6 6 10 7 4 8 2 9 2 10 1

Q: When do we use alpha and beta in hypothesis testing?

A: Basics: Alpha is the probability of  making  Type I error in hypothesis test . i.e incorrectly…

Q: Which is the correct alternative hypothesis based on this research question: Is there a difference…

A: Let, u1 is the mean of first population(MEN BMI) and u2 the mean of the second(WOMEN BMI)     Null…

Q: research group conducted an extensive survey of 3113 wage and salaried workers on issues ranging…

A: Solution: Given information: p= 0.47 Population proportion  E= 0.013 Margin of error  α=0.05  Level…

Q: A manufacturer claims that 95% of its fax machines are good. In a random sample of 88 such fax…

A: It is given that out of 88 machines, it is found that 98% are good. The sample proportion, p is…

Q: In 2002, NCHS reported that 75% of children aged 2-17 saw a dentist in the past year. An…

A: Step 1: Suppose p is the true proportion of children aged 2-17 living in City B who use dental…

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: tourists

A: Here hypothesis testing of proportion

Q: In 2003, an organization surveyed 1,510 adult Americans and asked about a certain war, "Do you…

A: Using Excel formula, =NORM.S.INV(1-(0.1/2)), the critical value for 90% confidence level is 1.645.

Q: A particular state university system has 5 campuses. On each campus, a random sample of students…

A: a)   In this case, the data is collected in simple random sampling method. The variables different…

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: According to a recent report, 47% of college student internships are unpaid. A recent survey of 80…

A: given data  n = 80 x = 45 claim : p ≠ 0.47

Q: Only 18% of registered voters voted in the last election. Will voter participation change for the…

A:

Q: A research group conducted an extensive survey of 3112 wage and salaried workers on issues ranging…

A:

Q: A car insurance company claims that 92% of its customers are happy with their service. You randomly…

A: Given,   The sample proportion is,

Q: 19% of deaths among male adults can be attributed to heart diseases. Is this percentage different…

A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

Q: Researchers want to use a hypothesis test to test the claim that the proportion of college students…

A: The hypotheses tests contain two hypothesis: null hypothesis and alternate hypothesis. The alternate…

Q: A researcher wants to investigate the effect of anti-anxiety medication on depression. To do so, she…

A: Group one : Placebo treatment Second group: Medication A researcher wants to investigate the effect…

Q: shopkeeper wonders if number of their female and male customers are equal or not. They count the…

A:

Q: When the 2000 GSS asked whether human beings developed from earlier species of animals, 53.8% of…

A: It is given that 53.8% of 1095 respondents answered that this was probably or definitely not true.

Q: Some people claim that they can tell the difference between a diet soda and a regular  soda in the…

A: In the experiment, diet and ordinary sodas will be differentiated.The sample size is  people.The…

Q: use a hypothesis test to determine if the proportions are statistically different. A recent survey…

A:

Q: A research group conducted an extensive survey of 3044 wage and salaried workers on issues ranging…

A: From the provided information, Sample size (n) = 3044 From which 1586 responded "Personal…

Q: High School Band ~ In most US high schools, students can play an instrument in three types of bands.…

A: The given frequencies are as follows:

Q: A shopkeeper wonders if number of their female and male customers are equal or not. They count the…

A:

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.