A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under her hand without seeing it and without touching it. Among 277 trials, the touch therapists were correct 113 times. Use a 0.01 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch therapists are effective?

The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Tennis Swimming Basketball 18-25 97 86 72 26-30 91 78 54 31-40 68 72 50 Over 40 67 58 43 What can be concluded at the a = 0.10 significance level?

Explain how the P-value is obtained for a one-mean z-test in case the hypothesis test is a. left tailed. b. right tailed. c. two tailed.

B. Identify the test statistic Z=___ C. Identify the​ P-value. P-value=___ D. What is the conclusion based on the hypothesis​ test? The​ P-value is (greater than/less than) the significance level of α=0.01​,so (reject/ fail to reject) the null hypothesis. There is (suffiecient/ insufficient) evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25.   Test the claim by constructing an appropriate confidence interval. The 90​% confidence interval is ___<( p1-p2)<___   E. Because the confidence interval limits (do not include/include) 0, it appears that the two proportions are (equal/not equal) Because the confidence interval limits include (only negative/ only positive/ negative and positive) values, it appears that the proportion of people over 55 who dream in black and white is (greater than/less than/ not significantly different from) the proportion for those under 25.   F. An explanation…

A. Identify the test statistic test B. Identify the P-value for this hypothesis test C. If P-value is reject H0 or fail to reject H0 D. Do the results support the belief that 50.8% of newborn babies are boys?

a. Let p denote the population proportion of correct hand selections by touch therapists. Identify the null and alternative hypotheses to test the claim that touch therapists use a method equivalent to random guesses. b. Identify the test statistic. c. Identify the​ P-value. d.  State the conclusion about the null​ hypothesis, as well as the final conclusion that addresses the original claim. Address whether the results suggest that touch therapists are effective.

An ANOVA test is conducted of the grades earned by students from a math professor, who taught 3 sections of the same class: morning, afternoon and evening. The decision was to Reject the null hypothesis. Does the test tell which mean is significantly different? yes O no

B. Identify the test statistic test C. Identify the P-value for this hypothesis test D. If P-value is reject H0 or fail to reject H0?

Suppose that in a random selection of 100 colored candies, 24% of them are blue. The candy company claims that the percentage of blue candies is equal to 29%. Use a 0.05 significance level to test that claim. H,: p>0.29 OC. H, p=0.29 H, p#0.29 O D. Ho p+0.29 H, p=0.29 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 29% O B. Fail to reject H. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 29% O C. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to…

a. set up appropriate null and alternative hypotheses of the test b. choose an appropriate test statistic and use the data to find the p-value