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Molodets [167]
3 years ago
13

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<_____________

Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0

Answer: attached below

Step-by-step explanation:

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Find the sum of the geometric sequence -3,15,-75,375,... when there are 7 terms and select the correct answer below.
vivado [14]

Answer:

-39,063

Step-by-step explanation:

In this geometric, sequence, you are multiplying by -5. So, we can continue the sequence by mulitplying 375(your last value) by -5 and so on, until we have 7 total terms.

Now we add the terms together:

-3+15+-75+375+-1875+9375+-46875

=-3+15-75+375-1875+9375-46875

=-39063

Hope this helps :)

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to find n you simply divide both sides by 7 getting
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