1. As an educated consumer of news, you know that when poll results are reported the following information should be included:

Select one:

a.

Both the point estimate andE

b.

The sampling method

c.

All of this information affects the quality of a poll

d.

The size of the sample

2. The label on your product includes a claim that it weighs 9 grams. To determine the accuracy of your manufacturing process, you select a random sample ofn= 29 and compute a CI of [8.75, 9.25]. Assume the population is normally distributed. You conclude that:

Select one:

a.

You are confident that your process in correct because 9 grams is within the interval

b.

Your conclusion could be inaccurate because the sample size is so small

c.

You should adjust the CL to a smaller interval so you can be more confident in the result

d.

You are at risk of complaints because the weight could be higher or lower than the claim

3. It is acceptable to compute a CI for using critical zif we:

Select one:

a.

Usen 30

b.

First calculate the minimum desired sample size

c.

Usen 30

d.

Choose a CL of 95%

4. To findEor a point estimatefrom a CI, calculate:

Select one:

a.

(LU-UL)/2

b.

(UL-LL)*2

c.

(UL-LL)/2

d.

(LU-UL)*2