Camille believes that 50% of first-time brides in the United States are younger than their grooms. She performs a hypothesis test to determine if the percentage is the same or different from 50%. Camille samples 100 first-time brides and 53 reply that they are younger than their grooms. For the hypothesis test, she uses a 3% level of significance.

In 2013, 46% of high school students tried a tobacco product. From a survey of 500 randomly  selected high school students, how likely is it to get a proportion of 0.196 that tried a tobacco product?

Describe the sample space that you would use to calculate the probability of the months in a year.

Among college students, the proportion p who say they're interested in their congressional district's election results has traditionally been 65% . After a series of debates on campuses, a political scientist claims that the proportion of college students who say they're interested in their district's election results is more than 65%. A poll is commissioned, and 192 out of a random sample of 265 college students say they're interested in their district's election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. H₂ : H₁ :0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the…

A study in 2001, asked 792 college-age kids if they are attending a college and whether at least one of their parents had a college degree. Out of 445 college students, 214 stated that their parents did not have a college degree, and out of 347 teens not enrolled in a college, 298 indicated that their parents did not have a college degree. We would like to determine if the proportion of parents with no college-degree for teens who are not enrolled in a college is the same as that for teens who are enrolled in a college. 20.State the null and alternative hypothesis for this investigation in complete sentences and as mathematical equations. 21. Find the point estimate for the parameter of interest for this investigation. 22. Find the test statistic for this investigation. 23. Find the p-value for this investigation. 24. State the conclusion of this investigation in context.

Among college students, the proportion p who say they're interested in their congressional district's election results has traditionally been 75%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they're interested in their district's election results is more than 75%. A poll is commissioned, and 212 out of a random sample of 275 college students say they're interested in their district's election results. Is there enough evidence to support the political scientist's claim at the 0.10 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H, and the alternative hypothesis H₁. HO H₁ :0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the critical…

Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65%. A poll is commissioned, and 180 out of a random sample of 250 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. a.) State the null hypothesis H0 and the alternative hypothesis H1. b.) Determine the type of test statistic to use (Z, t (with t, degrees of freedom is needed), Chi-Square, or F). c.) Find the value of the test statistic. (Round to three or more decimal places.) d.) Find the p-value. (Round…

Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 5 customers and determining whether or not they purchase any merchandise. What is the number of sample points in the experiment?

The Gallup poll asks respondents how they would rate the honesty and ethical standards of people in different fields—very high, high, average, low, or very low. In 2005, 65% of the respondents gave medical doctors a rating of “very high or high,” compared to a 67% rating for pharmacists. The results are based on a simple random sample of 1,000 persons taken in 2005; each respondent rated clergy, medical doctors, pharmacists, and many other professions. Would it be appropriate to use these values to carry out a two-sample z test to evaluate whether difference between doctors and pharmacists is real? Group of answer choices Yes No

The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential. Last year, the high school dropout rate was 8.1%. A polling company recently took a survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the p-value and α are __________.