Suppose that with a budget of $130, Deborah spends $78 on sushi and $52 on bagels when sushi costs $2 per piece and bagels cost
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Answer:
So the answer for this case would be n=12 rounded up to the next integer
Explanation:
represent the sample mean
population mean (variable of interest)
s=840 represent the sample standard deviation
n represent the sample size
The margin of error is given by this formula:
(a)
And on this case we have that ME =150 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 95% of confidence interval, the significance level if 5% and the critical value would be , replacing into formula (b) we got:
So the answer for this case would be n=12 rounded up to the next integer