4. For a one-sample t test with af = 40, find the P-values of the following hypothesis tests. (a) HO: µ = 4 years versus Ha: u + 4 years, with the observed test statistic to = 1.5. (b) HO : µ 2 4 years versus Ha: u < 4 years, with the observed test statistic to = -2.5. (c)H0 : µs 4 years versus Ha: u >4 years, with the observed test statistic to = 3.5.

Suppose are running a study/poll about the accuracy rate for fingerprint identification. You randomly sample 127 people and find that 89 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho: p = 0.72 H₁: p 0.72 Calculate the test statistic, rounded to 3 decimal places Question Help: Video Message instructor Post to forum Submit Question

The one-sample ?‑statistic for a test of ?0:?=0 versus ?1:?≠0 based on ?=15 observations has the value ?=−2.138, where ?0 and ?1 are the null and alternative hypotheses, respectively. The sample size is denoted by ?. Use this ?‑table to determine which two ?-values bracket the ?-value of the test. Report your answer as listed in the given ?‑table.

The p-value for a hypothesis test turns out to be 0.0985. At a 8% level of significance, what is the proper decision? Reject H0H0 Fail to reject H0

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

What are the hypotheses for the​ test?     A. H0​: β1≠0 and Ha​: β1=0   B. H0​: β1=0 and Ha​: β1<0   C. H0​: β1=0 and Ha​: β1>0 Your answer is not correct.   D. H0​: β1=0 and Ha​: β1≠0 This is the correct answer.   What is the test​ statistic?   t= ​(Round to two decimal places as​ needed.)   Find the​ P-value.   ​P-value= ​(Round to three decimal places as​ needed.) Part 4 Which of the following is the correct conclusion for the hypothesis​ test?     A. Do not reject H0​; the data provide sufficient evidence to conclude that x is useful for predicting y.   B. Reject H0​; the data do not provide sufficient evidence to conclude that x is useful for predicting y.   C. Do not reject H0​; the data do not provide sufficient evidence to conclude that x is useful for predicting y. Your answer is correct.   D. Reject H0​; the data provide sufficient evidence to conclude that x is useful for predicting y. Part 5 b. Find a 95​%…

Males and females were asked what they would do if they received a $100 bill in the mail that was addressed to their neighbor, but had been incorrectly delivered to them. Of the 70 males sampled, 55 said yes they would return it to their neighbor. Of the 130 females sampled, 120 said yes. The overall question is: Is this sufficient evidence to say that the two true proportions are different? Assume that the p-value turns out to be .027 (again not the correct p-value for this situation but use it to answer this question). What is your decision on this hypothesis test using a 5% level of significance? O Fail to reject the null hypothesis Reject the null hypothesis

Consider testing the hypotheses Ho: p 0.4 versus Hai p> 0.4. Four possible sample statistics, along with four possible p-values, are given. Match the statistics to their p-values. p= 0.42 p=0.38 p= 0.51 p= 0.46 D

A sample of 100 yielded a test statistic of 2.1. For a level of significance of 0.05, the null hypothesis was rejected. What was the sample proportion for the sample of .1 100? What was the p-value for this test? 0.864

Consider the hypothesis test below. Ho : P1 – P2 0 The following results are for independent samples taken from the two populations. Sample 1 Sample 2 100 n2 = 300 P1 = 0.27 P2 = 0.15 Use pooled estimator of p. a. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. b. With a = 0.05, what is your hypothesis testing conclusion? Select your answer -