3 Points A New Cream That Advertises That It Can Reduce Wrinkles And Improve Skin Was Subject To A Recent Study A Sam 1 (57.02 KiB) Viewed 129 times
(3 points) A new cream that advertises that it can reduce wrinkles and improve skin was subject to a recent study. A sample of 55 women over the age of 50 used the new cream for 6 months. Of those 55 women, 46 of them reported skin improvement (as judged by a dermatologist). You want to test that the cream will improve the skin of more than 60% of women over the age of 50. The null and alternative hypothesis are respectively A. H = 0.6, HA:P < 0.6 B. Ho: = 0.6, HA:P >0.6 C. Ho : P = 0.6, HA:P* 0.6 OD. H:p>0.6, HA: P = 0.6 The test statistic for the test is O A. 3.58 B. 4.74 C. 0.065 D. -4.74 The P-value is found to be 0.0002. At 5% significance level, A. we should reject the null hypothesis. B. we should not reject the null hypothesis. C. we should accept the alternative hypothesis. D. we do not have enough information to make decision.
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= 0.6, HA:P < 0.6 B. Ho: = 0.6, HA:P >0.6 C. Ho : P = 0.6, HA:P* 0.6 OD. H:p>0.6, HA: P = 0.6 The test statistic for the test is O A. 3.58 B. 4.74 C. 0.065 D. -4.74 The P-value is found to be 0.0002. At 5% significance level, A. we should reject the null hypothesis. B. we should not reject the null hypothesis. C. we should accept the alternative hypothesis. D. we do not have enough information to make decision.