A recent study found that 64 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 40 grams of potato chips as compared to a mean of 23 grams for 54 children who watched a commercial for an alternative food snack. Suppose that the sample standard deviation for the children who watched the celebrity-endorsed commercial was 21.1 grams and the sample standard deviation for the children who watched the alternative food snack commercial was 12.9 grams. Complete parts (a) through (d) below. a. Assuming that the population variances are equal and a = 0.05, is there evidence that the mean amount of potato chips eaten was significantly higher for the children who watched the celebrity-endorsed commercial? Let population 1 be the weights of potato chips eaten by children who watched the celebrity-endorsed commercial and let population 2 be the weights of potato chips eaten by children who watched the alternative food snack commercial. What are the correct null and alternative hypotheses? O A. Ho: 41 - H2 = 0 H1: 11 - 12 $ 0 O c. Ho: 41 - H2 ≥ 0 H1: 19 - 42 <0 • B. Ho: 11 - H2 $0 H1: 11 - 42 = 0 OD. Ho: 41 - H2 50 H1: 41 - H2 > 0 What is the test statistic? ISTAT = (Round to two decimal places as needed.) What is the corresponding p-value? p-value = (Round to three decimal places as needed.) What is the correct conclusion? O A. Reject Ho. There is sufficient evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial. 0 B. Do not reject Ho. There is insufficient evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial. O C. Reject Ho. There is insufficient evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebritv-endorsed commercial. O D. Do not reject Ho. There is sufficient evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial.
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- Ho: μ1 − μ2 = 0 (no difference in mean grams eaten) - H1: μ1 − μ2 > 0 (mean for celebrity-endorsed is greater) Show more…
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A recent study found that 63 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 39 grams of potato chips, compared to a mean of 27 grams for 53 children who watched a commercial for an alternative food snack. Suppose that the sample standard deviation for the children who watched the celebrity-endorsed commercial was 21.2 grams and the sample standard deviation for the children who watched the alternative food snack commercial was 12.9 grams. Complete parts (a) through (d) below. a. Assuming that the population variances are equal and alpha equals 0.05, is there evidence that the mean amount of potato chips eaten was significantly higher for the children who watched the celebrity-endorsed commercial? Let population 1 be the weights of potato chips eaten by children who watched the celebrity-endorsed commercial, and let population 2 be the weights of potato chips eaten by children who watched the alternative food snack commercial. What are the correct null and alternative hypotheses? A. H0: μ1 - μ2 = 0 H1: μ1 - μ2 ≠ 0 B. H0: μ1 - μ2 ≠ 0 H1: μ1 - μ2 = 0 C. H0: μ1 - μ2 ≤ 0 H1: μ1 - μ2 > 0 D. H0: μ1 - μ2 ≥ 0 H1: μ1 - μ2 < 0 What is the test statistic? tSTAT = 3.60 (Round to two decimal places as needed.) What is the corresponding p-value? p-value = (Round to three decimal places as needed.)
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A recent study found that 64 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 37 grams of potato chips, compared to a mean of 24 grams for 54 children who watched a commercial for an alternative food snack. The sample standard deviation for the children who watched the celebrity-endorsed commercial was 21.3 grams, and the sample standard deviation for the children who watched the alternative food snack commercial was 12.6 grams. a. Assuming that the population variances are equal and α=0.05, is there evidence that the mean amount of potato chips eaten was significantly higher for the children who watched the celebrity-endorsed commercial? Let population 1 be the weights of potato chips eaten by children who watched the celebrity-endorsed commercial, and let population 2 be the weights of potato chips eaten by children who watched the alternative food snack commercial. What are the correct null and alternative hypotheses? What is the test statistic?
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A recent study found that 61 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 37 grams of potato chips as compared to a mean of 23 grams for 51 children who watched a commercial for an alternative food snack. Suppose that the sample standard deviation for the children who watched the celebrity-endorsed commercial was 21.4 grams and the sample standard deviation for the children who watched the alternative food snack commercial was 12.9 grams. Complete parts (a) through (c) below. a. Assuming that the population variances are equal and α = 0.05, is there evidence that the mean amount of potato chips eaten was significantly higher for the children who watched the celebrity-endorsed commercial? Let population 1 be the weights of potato chips eaten by children who watched the celebrity-endorsed commercial and let population 2 be the weights of potato chips eaten by children who watched the alternative food snack commercial. What are the correct null and alternative hypotheses? A. H0: μ1 - μ2 ≤ 0 H1: μ1 - μ2 > 0 B. H0: μ1 - μ2 ≠ 0 H1: μ1 - μ2 = 0 C. H0: μ1 - μ2 ≥ 0 H1: μ1 - μ2 < 0 D. H0: μ1 - μ2 = 0 H1: μ1 - μ2 ≠ 0 What is the test statistic? tSTAT = (Round to two decimal places as needed.)
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