Starting salaries of 90 college graduates who have taken a statistics course have a mean of $43,993 and a standard deviation of
$9,144. Using 99% confidence level, find the following:
A. The margin of error E:________
B. The confidence interval for the mean: μ__________< μ<_____________
A. The margin of error E:________
B. The confidence interval for the mean: μ__________< μ<_____________
1 answer:
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Answer:
t=-105
Step-by-step explanation:
What we need to do here is to isolate t.
Let's multiply both sides by -15.
7*-15= -105
t=-105