Pi. I don't know what the square root is doing there because it has no number under it.
Answer: 0.0170
Step-by-step explanation:
Given : The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00.
i.e. 

We assume the distribution of amounts purchased follows the normal distribution.
Sample size : n=50
Let
be the sample mean.
Formula : 
Then, the probability that the sample mean is at least $25.00 will be :-

Hence, the likelihood the sample mean is at least $25.00= 0.0170
Mr. Webster is buying a carpet for an exercise room in his basement the room will an area of 230 ft
I believe it would be 25.7 miles. I just divide 822.4 by 32.