Prоvide аn аpprоpriаte respоnse.Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.Claim: μ ≠ 14; α = 0.05; σ = 2.7Sample statistics: = 13.1, n = 35
Prоvide аn аpprоpriаte respоnse.Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 women are randomly selected, find the probability that they have a mean height greater than 63.0 inches.
Prоvide аn аpprоpriаte respоnse.In a recent survey, 80% of the community favored building a police substation in their neighborhood. If 15 citizens are chosen, what is the mean number favoring the substation?
Prоvide аn аpprоpriаte respоnse.Find the mean of the binomial distribution for which n = 80 and p = 0.2.
Prоvide аn аpprоpriаte respоnse.A random sample of 15 statistics textbooks has a mean price of $105 with a standard deviation of $30.25. Determine whether a normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of statistics textbook prices is not normally distributed.
Prоvide аn аpprоpriаte respоnse.Assume that the random variable X is normally distributed, with mean and standard deviation Compute the probability P(X
Prоvide аn аpprоpriаte respоnse.Given H0: μ ≤ 25 and Ha: μ > 25, determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
REMEMBER: THIS IS ONLY PART 1 OF THE EXAM! BE SURE TO TAKE PART 2 BEFORE MARCH 17 AT 11:59PM!
Prоvide аn аpprоpriаte respоnse.A random sample of 40 students has a test score with = 81.5. Assume the population standard deviation is 10.2. Construct the confidence interval for the population mean, μ if c = 0.90.