Statistical Inferences

Question 1

Which of the following criteria are necessary conditions for making a statistical inference?

Revolt · Accepted Answer

AssessCtrleb0abe32-f759-4940-9dba-f90d1f10d59a_1_A,AssessCtrleb0abe32-f759-4940-9dba-f90d1f10d59a_1_D,AssessCtrleb0abe32-f759-4940-9dba-f90d1f10d59a_1_E

Question 2

What range of values shows the confidence interval for the study?

Revolt · Accepted Answer

B: 149.61 to 150.39

Question 3

Among 420 randomly selected employees at a company, the mean number of hours of overtime worked per month is 10 hours and the standard deviation is 1.6. What is the margin of error, assuming a 99% confidence level?

Revolt · Accepted Answer

C: 0.20

Question 4

What is the margin of error, assuming a 90% confidence level? Round your answer to the nearest tenth.

Revolt · Accepted Answer

2.6

Question 5

The margin of error for a 95% confidence level will be greater than 0.3.less than 0.3.equal to 0.3.

Revolt · Accepted Answer

A: greater than 0.3.

Question 6

The margin of error, assuming a 95% confidence level, is approximately . Round to the nearest hundredth

Revolt · Accepted Answer

0.04

Question 7

Question 7

Revolt · Accepted Answer

: 7.33; : 7.67

Question 8

The confidence interval is ⇒ 7.33 to ⇒ 7.67.

Revolt · Accepted Answer

⇒ 7.33: 0.27 to 0.39; ⇒ 7.67: 0.27 to 0.39

Question 9

You are told that in a sample of size 225 the mean is 48.5 and the standard deviation is 1.8. The study is reported with 90% confidence level. Explain how to determine if 48.8 is within the confidence interval.

Revolt · Accepted Answer

To determine whether 48.8 is within the confidence interval, calculate the margin of error using ME = z* × s / √n. With z* = 1.645, s = 1.8, and n = 225, the margin of error is approximately 0.20. The confidence interval is 48.3 to 48.7, so 48.8 is not within the interval.

Question 10

Which of the following did you include in your explanation?

Revolt · Accepted Answer

AssessCtrla4c927a2-dc0e-40a6-a11f-011c9db95203_1_A,AssessCtrla4c927a2-dc0e-40a6-a11f-011c9db95203_1_B,AssessCtrla4c927a2-dc0e-40a6-a11f-011c9db95203_1_C,AssessCtrla4c927a2-dc0e-40a6-a11f-011c9db95203_1_D,AssessCtrla4c927a2-dc0e-40a6-a11f-011c9db95203_1_E

Statistical Inferences Answers

More from this Course

TRY EDGENUITY HACKS