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Doss [256]
3 years ago
11

A grocery store chain has been tracking data on the number of shoppers that use coupons. The data shows that 71% of all shoppers

use coupons. 18 times out of 20 these results were considered accurate to within 2.5%. What is the confidence interval? Question 23 options:
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
4 0
<span>Confidence Interval = (p-E, p+E) = (0.71-0.025, 0.71+0.025) = (0.685, 0.735) </span>
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Lady_Fox [76]
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serg [7]

Answer:

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All together, 3 people have 120 coins. mark has 3 times as many as joel, and joel has 1/2 as many as sandra. how many coins does
oksano4ka [1.4K]
Joel = j, Mark = m, Sandra = s
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m = 3j
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plug in (substitute) each letter to make it in terms of only j: j + m + s = 120
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now plug in for the j & s equation:
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7 0
3 years ago
Tanya has $42 to spend at the Dolphin Island store. T-shirts sell for $7 each and a pair of sunglasses sells for $6. Tanya buys
ch4aika [34]
Hey! Let's go through this.

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Answer: y=−5/4x−5

Step-by-step explanation:

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