Significantly more than 80%. The test statistic is 0.80 0.05 1.25 2.00 Which one

Question

Significantly more than 80%. The test statistic is 0.80 0.05 1.25 2.00 Which one of the following is true regarding the sampling distribution of the mean for a large sample size? It has the same shape, mean and standard deviation as the population. It has a normal distribution with the same mean and standard deviation as the population. It has the same shape and mean as the population, but has a smaller standard deviation. It has a normal distribution with the same mean as the population, both with a smaller standard deviation. A grocery store claims that its service level of fat-free milk (i.e., the percentage of customers who do not experience a stockout) is 95%, with a standard deviation of 1%. You take a simple random sample of 100 customers who visited the store and find that the percentage of satisfied customer is 92%. You are inclined to believe the grocery store's claim when Pr(p^

Explanation / Answer

22.d) Per Central Limit Theorem, with large sample size, the mean of sampling distribution has the same mean as that of population but a smaller standard deviation, s=sigma/sqrt n.

23. d)

24. b) dependent-people's sense of balance and alcohol

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