Which of the following are valid inferential statements based on our sample stat

Question

Which of the following are valid inferential statements based on our sample statistic?

Select one or more:

a. There is not sufficient evidence to conclude that STAT 250 students have a browser preferences that is any different than the expected global preferences.

b. There is sufficient evidence to conclude that STAT 250 students have a browser preferences that is different than the expected global preferences.

c. We could be making an error by rejecting the null hypothesis when it is in fact true. (Type I error).

d. We could be making an error by not rejecting the null hypothesis when it is fact incorrect (Type II error).

e. None are correct.

Explanation / Answer

Sol:

inferences are for population basing on sample statistcs.

we reject null hypothesis

or fail to reject null hypothesis.

Acordingly,

a. There is not sufficient evidence to conclude that STAT 250 students have a browser preferences that is any different than the expected global preferences.

b. There is sufficient evidence to conclude that STAT 250 students have a browser preferences that is different than the expected global preferences.

ANSWER A,B are valid statements.

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