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worty [1.4K]
3 years ago
14

The mean gpr averages of a random sample of 36 college seniors is calculated to be 2.6. the population standard deviation is 0.3

.
a. find the 95% confidence interval for the mean of the entire senior class.
b. find the 99% confidence interval for the mean of the entire senior class.
c. which confidence interval is wider? why?
Mathematics
1 answer:
Alika [10]3 years ago
8 0
A is the correct answer
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UNO [17]

\\ \bull\tt\dashrightarrow \dfrac{-3}{8}x-20+2x>6

\\ \bull\tt\dashrightarrow \dfrac{-3}{8}x+2x=6+20=26

\\ \bull\tt\dashrightarrow \dfrac{-3+16}{8}x=26

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#27

\\ \bull\tt\dashrightarrow 0.5x-4-2x\leqslant 2

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