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spin [16.1K]
3 years ago
9

food express is having a special promotion in which customers can win a free gallon of milk if they're receipt has a star on it.

so far 147 of 156 customers have not won. what is the experimental probability of winning a free gallon of milk
Mathematics
1 answer:
jeka943 years ago
5 0
We know here 147 out of 156 customers are not won so far
Probability of not winning=147/156
P not wining=0.94
so probability for winning is 1-P not wining
1-0.94= 0.057

if u want an answer is numerator and denominator so u just find 1-147/156<span />
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Answer:

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Step-by-step explanation:

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Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

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M = 1.96\frac{3.8}{\sqrt{34}} = 1.3

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The upper end of the interval is the sample mean added to M. So it is 25.9 + 1.3 = 27.2 pounds.

So the correct answer is:

24.6 < μ < 27.2

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Answer:

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