1. fast please Questions 1 – 3 refer to the following: A physical therapist wanted to know whether the mean pulse of men was less than the mean pulse of women. She randomly selected 70 women and 51 men to participate in her study. Each subject was required to step up and down onto a 6-inch platform for 3 minutes. She obtained the following results: Sample size Sample mean Sample standard deviation Men 51 112.3 11.3 Women 70 118.3 14.2 This is a test of: Group of answer choices Matched pairs Two proportions Two means, population standard deviation known. Two means, population standard deviation unknown.
1. fast please
Questions 1 – 3 refer to the following:
A physical therapist wanted to know whether the mean pulse of men was less than the mean pulse of women. She randomly selected 70 women and 51 men to participate in her study. Each subject was required to step up and down onto a 6-inch platform for 3 minutes. She obtained the following results:
|
|
Sample mean |
Sample standard deviation |
|
|
Men |
51 |
112.3 |
11.3 |
|
Women |
70 |
118.3 |
14.2 |
- This is a test of:
Group of answer choices
Matched pairs
Two proportions
Two means, population standard deviation known.
Two means, population standard deviation unknown.
2. Which type of test is it?
Group of answer choices
Right-tailed test
Left-tailed test
two-tailed test
Unable to determine
3. At the 2% level of significance, the appropriate conclusion is:
Group of answer choices
The mean pulse of men is less than the mean pulse of women.
The mean pulse of men is higher than the mean pulse of women.
The mean pulse of men is at least equal to the mean pulse of women.
The mean pulse of men is no more than the mean pulse of women.
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