Mathematics Homework Help
Mathematics Homework Help. A normal population has a mean of 78 and a standard deviation of 6.
You select a sample of 50.
Compute the probability the sample mean is :(Round z values to 2 decimal places and final answer to 4 decimal places )
a) Less than 77
probability
b) Between 77 and 79
probability
c)Between 79 and 80
Probability
d) Greater than 80
Probability
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