Putting the Tiles in Order;

A university is conducting a survey to study the number of hours students sleep at night during exam week. A sample of 20 students was drawn, and these responses were obtained: 6.5, 5, 8, 5.5, 7, 4, 4.5, 5, 6, 5.5, 4, 7.5, 6, 7, 8, 5, 6, 6.5, 6.5, 5. The standard deviation of the population mean is 2 hours.

Arrange the steps in the correct sequence to find the range in which 95% of the sample mean occurs.

Tiles are:

1. The range in which 95% of the sample mean occurs

= 5.93 + 2 * 0.45 and 5.93 - 2 * 0.45

= 6.83 hours and 5.03 hours.

2. The sample mean is / u = 118.5/20=5.93

3. Calculate the standard deviation.

4. The 20 students' total number of study hours

is 118.5 hours.

5. The standard error of the mean of the sample is sigma/sqrt n = 2/sqrt 20 = 0.45

6. The range in which 95% of the sample mean occurs is / u + - 2 X sigma / sqrt n.

Only need 5 steps

.

Question

Cherokee

23 September, 20:48

+3

Answers (2)

Know the Answer?

Izaiah Hurst · Answer 1

Izaiah Hurst 24 September, 00:42

0

Here is the order:

4, 2, 5, 6, 1

Pugsley · Answer 2

The correct order of the tiles is as follows:

4.

2.

5.

6.

1.