Question

Use "PLUC" data and the description for the dataset on the blackboard. What t test shall...

Use "PLUC" data and the description for the dataset on the blackboard. What t test shall be used to compare the population means of "LWAS" between male and female.

One sample t test

Two sample independent t test

paired t test

X^2 test

Two sample proportion z test

Use "PLUC" data and the description for the dataset on the blackboard. What t test shall be test if the population mean of LWAS of males is more than 75.

One sample t test

Two sample independent t test

paired t test

X^2 test

Two sample proportion z test

Use "PLUC" data and the description for the dataset on the blackboard. What t test shall be used to compare the population means of "PLUC.pre" between "PLUC.post".

One sample t test

Two sample independent t test

paired t test

X^2 test

Two sample proportion z test
Math   Statistics-And-Probability   
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Homework Answers

Answer #1

(1)

Question: What t test shall be used to compare the population means of "LWAS" between male and female.

Correct option:

Two sample independent t test

Explanation:
Here the 2 samples: male and female are independent

(2)

Question: What t test shall be test if the population mean of LWAS of males is more than 75.

Correct option:

One sample t test

Explanation:
Here, the research question is: Is the population mean of LWAS of males more than 75. ? So,one sample t test isappropriate.

(3)

Question: What t test shall be used to compare the population means of "PLUC.pre" between "PLUC.post".

Correct option:

paired t test

Explanation:
Here the 2 samples are not independent. The same sample is measured twice: before and after.

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