# Question

Consider the null hypothesis H0: µ = 5. A random sample of 140 observations is taken from a population with σ = 17. Using α = .05, show the rejection and non-rejection regions on the sampling distribution curve of the sample mean and find the critical value(s) of z for the following.

a. A right-tailed test

b. A left-tailed test

c. A two-tailed test

a. A right-tailed test

b. A left-tailed test

c. A two-tailed test

## Answer to relevant Questions

Explain how the tails of a test depend on the sign in the alternative hypothesis. Describe the signs in the null and alternative hypotheses for a two-tailed, a left-tailed, and a right-tailed test, respectively. A consumer advocacy group suspects that a local supermarket’s 10-ounce packages of cheddar cheese actually weigh less than 10 ounces. The group took a random sample of 20 such packages and found that the mean weight for ...Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine that makes these rods does not produce each rod exactly 36 inches long. The lengths of the rods are normally distributed, and ...For each of the following examples of tests of hypothesis about , show the rejection and non rejection regions on the t distribution curve. a. A two-tailed test with α = .02 and n = 20 b. A left-tailed test with α = .01 ...Perform the following tests of hypothesis. a. H0: µ = 285, H1: µ ≠ 285 n = 55, = 267.80, s = 42.90, α = .05 b. H0: µ = 10.70, H1: µ ≠ 10.70, n = 47, = 12.025, s = 4.90, α = .01 c. H0: µ = 147,500, H1: µ ≠ ...Post your question

0