Posted: December 27th, 2016

Consider a set of 50 measurements with mean of 50.2 and standard deviation 18.7 with the following observed frequencies.

Consider a set of 50 measurements with mean of 50.2 and standard deviation 18.7 with the following observed frequencies.

Interval Observed Frequencies
39.99 or less 12
40 – 59.99 18
60 – 79.99 15
80 and higher 5
50

It is desired to test whether these measurements came from a normal population. Calculate the theoretical frequency for the interval 60 – 79.99.

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