Question 1

Determine the z-score for C=92%. Round answer to the nearest thousandths place and don't enter any signs.

__________________________.

Question 2

Determine the TI-menu required.

A random sample of 40 employees reveals amean weekly distance traveled to be 423 miles with sigma= 42 miles. To determine the test statistic which TI-menu is required?

a.ZInterval

b.1PropZInt

c.TTest

d.ZTest

e.1PropZtest

f.TInterval

___________________.

Question 3

To estimate the population mean weight of out-going packages, a shipping company randomly samples 70 packages and finds a mean weight of 52 pounds.The population standard deviation is known to be 10.1 pounds.

Construct the 88% confidence interval and state the lower bound___________________ and upper bound ___________________, each rounded to the nearest thousandths place.

Interpret your CI in context___________________.

Question 4

A landscape engineer claims that the average area of a pond is at most 150 sqft. To test this claim 30 randomly selected ponds show a mean of 151.7 sqft.The population standard deviation is known to be 6.8 sqft.Use the pvalue method to test the claim at the 7% significance level.

a. State Ho and Ha___________________

b. Determine Critical Value and identify the rejection region___________________

c. State the test menu and determine Test Statistic___________________

d. Determine the p-value___________________

e. State the conclusion, explain why, and interpret in context___________________

Round answers to the nearest thousandths.

Copy/paste from these symbols as needed:p, , , , <, >, =,