One inch of rain on a square foot of land weights 5.2 pounds. About how many ghallons of rain are there? round your answer to th
1 answer:
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Answer:
So the answer for this case would be n=16 rounded up to the nearest integer
Step-by-step explanation:
For this case we have the following info given:
represent the population deviation
represent the margin of error desired
The margin of error for the true mean is given by this formula:
(a)
And on this case we have that ME =0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The confidence level is 80%, the significance would be and
the critical value for this case is
, replacing into formula (b) we got:
So the answer for this case would be n=16 rounded up to the nearest integer