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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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