Question
answer all these questions please with the right question number next to its letter QUESTION 27...
answer all these questions please with the right question number next to its letter
QUESTION 27
If a you want to investigate the tread life of your company’s tires, and you took a sample of 10 tires and constructed a 95% confidence interval, degrees of freedom and t value would be
| A |
11 degrees of freedom and t value of 2.201 |
|
| B |
10 degrees of freedom and t value of 2.228 |
|
| C |
9 degrees of freedom and t value of 2.262 |
|
| D |
This is a trick question, you can use the Z table with samples of less than 30 |
QUESTION 28
When the population standard deviation is unknown AND the sample size is less than 30, the test statistic to use is:
| A |
The Student's t distribution. |
|
| B |
The Binomial Distribution. |
|
| C |
The Z distribution. |
|
| D |
Chi-Square. |
QUESTION 30
What are the factors that determine the size of a sample?
| A |
The degree of confidence selected. |
|
| B |
The maximum allowable error. |
|
| C |
The variation in the population |
|
| D |
All of the above. |
Homework Answers
Answer #1
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