Consider the observed frequency distribution for a set of grouped random variables available below. Perform a...

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Consider the observed frequency distribution for a set of grouped random variables available below. Perform a...

Consider the observed frequency distribution for a set of grouped random variables available below. Perform a chi-square test using a=0.05 to determine if the observed frequencies follow the normal probability distribution with mu=99 and sigma=21.

Random Variables X	Frequency Fo
Less than 78	10
78 to under 99	15
99 to under 120	19
120 and more	6
Total	50

Calculate the chi-square test statistic, chi squared χ2=_____.

p-value=______.

math Statistics-And-Probability

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