Textbook ExpertVerified Tutor
25 Nov 2021
Given information
The data set is:
Step-by-step explanation
Step 1.
When the sample size is large (usually above 30), normal distribution acts as a very good approximation to a given data. Thus, the population mean is approximated by the sample mean and the population standard deviation is approximated by the sample standard deviation.
In the part f, using the normal distribution, the required probability is 0.6081.
Also, in the part g, from the frequency distribution, the cumulative relative frequency is 0.64.
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