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It is symmetric

It is unimodal

The mean the median and the mode are equal

It requires a continuity correction What percentage of a normal distribution is within 2 standard deviations of the mean? (Select the closest answer.) 50%

95%

75%

100%The area under the standard normal distribution between -1.5 and 1.5 is

0.1338

0.1668

0.4332

None of the above A real estate agent records the ages of 50 randomly selected home buyers in her sales area.

Name:

Quiz

For the normal distribution which of the following statements is not always true? It is symmetric

It is unimodal

The mean the median and the mode are equal

It requires a continuity correction What percentage of a normal distribution is within 2 standard deviations of the mean? (Select the closest answer.) 50%

95%

75%

100%The area under the standard normal distribution between -1.5 and 1.5 is

0.1338

0.1668

0.4332

None of the above A real estate agent records the ages of 50 randomly selected home buyers in her sales area. The mean age is 38 years with a sample standard deviation of 10 years.

Find a 99% confidence interval for the population mean age.A 1-sample test for a population mean has a critical value of 1.96 and a test statistic of 1.71. The correct statistical conclusion is to

Reject the null hypothesis

Reject the alternate hypothesis

Not reject the hull hypothesis

Not reject the alternate hypothesis

Name:

Quiz

For the normal distribution which of the following statements is not always true? It is symmetric

It is unimodal

The mean the median and the mode are equal

It requires a continuity correction What percentage of a normal distribution is within 2 standard deviations of the mean? (Select the closest answer.) 50%

95%

75%

100%The area under the standard normal distribution between -1.5 and 1.5 is

0.1338

0.1668

0.4332

None of the above A real estate agent records the ages of 50 randomly selected home buyers in her sales area. The mean age is 38 years with a sample standard deviation of 10 years.

Find a 99% confidence interval for the population mean age.A 1-sample test for a population mean has a critical value of 1.96 and a test statistic of 1.71. The correct statistical conclusion is to

Reject the null hypothesis

Reject the alternate hypothesis

Not reject the hull hypothesis

Not reject the alternate hypothesis

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