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IgorLugansk [536]
3 years ago
7

The manager of a grocery store selected a random sample of 100 customers to estimate the average checkout time. The 90% confiden

ce interval estimate for the average checkout time at the score is[1, 5] minutes. The correct confidence interval interpretation is ___________.
a. 100.0 to 200.0
b. If random samples of 100 customers are repeatedly selected, then that the average checkout time will be between 1 and 5 minutes for 95% of the samples.
c. We estimate with 95% confidence that the average checkout time for the sample of 100 customers is between 1 and 5 minutes.
d. None of these alternatives is correct.
e. We estimate with 95% probability that the average checkout time at the store is between 1 and 5 minutes.
Mathematics
1 answer:
lina2011 [118]3 years ago
3 0

Answer:

c

Step-by-step explanation:

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For relatively small denominators, the easiest way is to multiply the two denominators AND divide by the highest common factor (HCF).

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(use a calculator if necessary, for mental calculation, 24*16=20^2-4^2=400-16=384 ).

The highest common factor (HCF) is 8, since 24/8=3, 16/8=2, 3 and 2 do not have any more common factors, so it is the HCF.

The lowest common multiple (LCM) is then 384/8 = 48

For someone good at factoring, we see that the factors are:

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so the LCM is either 16*3=48, or 24*2=48.

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Step-by-step explanation:


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