Question 32 Not yet answered A manufacture makes light-weight sneakers, and claim that the average weight of one sneaker

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Question 32 Not Yet Answered A Manufacture Makes Light Weight Sneakers And Claim That The Average Weight Of One Sneaker 1 (20.81 KiB) Viewed 21 times

Question 32 Not yet answered A manufacture makes light-weight sneakers, and claim that the average weight of one sneaker is no bigger than 2 pounds. To verify this claim, a sample of 9 sneakers are weighed, and the sample mean is 24 pounds with the sample variance of 0.25 pounds“2. Assuming the weights of sneakers are normally distributed, we would like to test the claim of the manufacture at 10% level of significance. Please select the correct statement from below: Marked out of 3.00 Flag question The null hypothesis HO is us 2 pounds. Since p-value > 0.10, HO is accepted and the manufacture's claim is true. None of the other answers The null hypothesis HO is p > 2 pounds. Since p-value > 0.10, Ho is accepted and the manufacture's claim is true. The alternative hypothesis H1 is u > 2 pounds. Since p-value < 0.10, HO is rejected and the manufacture's claim is false. The null hypothesis HO is p > 2 pounds. Since p-value < 0.10, HO is rejected and the manufacture's claim is true.
Question 30 Not yet answered The % of alcohol content is normally distributed for the mouthwash of brand A, with a standard deviation o of 5%. We have measured the alcohol content of 13 mouthwashes of brand A, and the sample standard deviation is 7% What is the 95% lower confidence interval for o? Marked out of 3.00 O [-inf, 0.106] Flag question O 10.0.106] O [0.050,0.116] O [0.0028 inf] O 10,0.0113] O 0.053 inf]
Question 28 Not yet An urn contains exactly three balls numbered 1, 2, and 3, respectively. Random samples of two balls are drawn (first one followed by the second) from the urn with replacement. The average, Xuv = 0.5*(X+ + X2) where X and X2 are the numbers on the selected balls, is recorded after each drawing. Which of the following describes the sampling distribution of Xv? + answered Marked out of 3.00 Xav 1 1.5 2 2.5 3 Flag question Probability 1/9 2/9 1/3 2/9 1/9 Xav 1 1.5 2 2.5 3 3 Probability 5/9 2/9 1/3 2/9 1 Xay 1 1.5 2 2.5 3 Probability 0 0 1/3 1/3 1/3 0 O Xav X 1 1.5 2 2.5 3 Probability 1/10 1/10 1/10 1/10 1/10