Corey used the regression equation y = 1.505x − 88.21, where x is the temperature and y is the number of swimmers, to determine
2 answers:
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Answer:
1
The probability is
2
The probability is
Step-by-step explanation:
From the question we are told that
The population mean is
The standard deviation is
The sample size is
Generally the standard error for the sample mean is mathematically evaluated as
substituting values
Apply central limit theorem[CLT] we have that
substituting values
From the z-table we have that
For the second question
Apply central limit theorem[CLT] we have that
substituting values
From the z-table we have that
Thus