Question

QUESTION 1 "Use the Cumulative Normal Distribution Table or EXCEL to circle the correct answer. For a two-tailed test using a = .0160, z = O 1.96 1.14 2.41 0.86 QUESTION 2 A single numerical value used as an estimate of a population parameter is known as a parameter. a population parameter. a mean estimator. a point estimate.

Answer 1

Given :

1) Significance level = $\alpha$ = 0.0160

At 0.0160 significance level, the critical value of Z is

Z$\alpha$/2 = Z0.0160/2 = Z0.008 = 2.41......(from cumulative normal distribution table)

Therefore critical value for two tailed test is 2.41

Answer - option C

2) A single numerical value used as an estimate of a population parameter is known as a point estimate.

In point estimation, data from the sample are used to estimate the population parameter.

Answer - D