In testing H0: μ = 5 vs Ha: μ ≠ 5, which of the following statements is true as a result of increasing the sample size?

a. The sampling distribution of the sample mean has less variability.
b. There is no effect on the level of significance for the test.
c. There is no effect on whether the null hypothesis is true or false.

Use set builder notation to represent the following set: { -3, -2, -1, 0}

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. which simulation could not be used to answer questions about whether a customer would wait?