When using a chi-square test for the variance of one population, we are assuming that the population ...

When using a chi-square test for the variance of one population, we are assuming that the population is normally distributed.

Indicate whether the statement is true or false

Q. 2

A major automobile manufacturer has developed a new model car that it claims will average 25 mpg on the highway. A random sample of fifty of these cars was tested and they averaged 24 mpg.

This means that the claim made by the auto company is incorrect. Indicate whether the statement is true or false

Q. 3

The difference between bar charts and histograms is that bar charts always show percentage while histograms always show frequency.

Indicate whether the statement is true or false

Q. 4

Which of the following will result in a larger margin of error in an application involving the estimation of a population mean?

A) Increasing the sample size
B) Decreasing the confidence level
C) Increasing the sample standard deviation
D) All of the above

Q. 5

If two events are independent, then

A) they must be mutually exclusive.
B) the sum of their probabilities must be equal to one.
C) their intersection must be zero.
D) None of the above

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When using a chi-square test for the variance of one population, we are assuming that the population ...

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