For which of the following sample sizes would the sampling distribution of p̂ be approximately normal if p = 0.85? n = 10 n = 40 n = 60 n = 90 n = 100 n = 300

Which of the following samples will have the smallest value for the estimated standard error?​ Group of answer choices ​n = 16 with s2 = 64 ​n = 4 with s2 = 64 ​n = 4 with s2 = 16 ​n = 16 with s2 = 16

Suppose that the efficacy of a certain drug is 0.47. Consider the sampling distribution (sample size n= 179) for the proportion of patients cured by this drug.What is the mean of this distribution? What is the standard error of this distribution? Round your answer to two decimal places.

Consider a sampling distribution with p=0.11 and samples of size n each. Using the appropriate formulas, find the mean and the standard deviation of the sampling distribution of the sample proportion. a. For a random sample of size n = 4000. b. For a random sample of size n = 1000. c. For a random sample of size n = 500.

The population (N = 3) consists of three children whose ages are 4, 5, and 9; the following Questions pertains to the age of the children.  Assume that samples of size n = 2 are randomly selected with replacement. A. Find the value of the population standard deviation s. B.  Table 6-2 describes the sampling distribution of the sample mean. Construct a similar table representing the sampling distribution at the sample standard deviation S.  Then combine values of S that are the same as in table 6-3.   C.  Find the mean of the sampling distribution of the sample standard deviation. D.  Based on the preceding results, is the sample standard deviation an unbiased estimator at the population standard deviation? Why or why not?

In each of the following cases, find the mean, variance, and standard deviation of the sampling distribution of the sample proportion p hat. (a) p = .4, n = 260 (b) p = .4, n = 119 (c) p = .5, n = 379 (d) p = .85, n = 978

Suppose that 70% of residents in a certain city own at least one pet. You select a random sample of 30 city residents. Let X = the number of residents that own at least one pet. Would it be appropriate to use a normal distribution to model the sampling distribution of X? No, there are at least 10 "successes" expected, but there are not at least 10 "failures" expected. It is not appropriate to use a normal distribution to model the sampling distribution of X. No, the sample size is greater than 10, so it is not appropriate to use a normal distribution to model the sampling distribution of X. Yes, the sample size is at least 30, so it is appropriate to use a normal dist bution to model the sampling distr ution of X. Yes, there are at least 10 "successes" expected and 10 "failures" expected so it is appropriate to use a normal distribution to model the sampling distribution of X. No, there are not at least 10 "successes" expected, although there are at least 10 "failures" expected. It is…

1. Consider a normal distribution with mean u mean. Calculate 12. Let ī be the sample P(i > 36) for each of the following cases: (a) n = 9, a = 90; (b) n = 9, s = 102; (c) n = 16, o = 80; and (d) n = 16, s = 71.6.