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frozen [14]
4 years ago
13

Ed had a piece of rope 6 3/4 ft long. He cut off 38 ft. How much rope does Ed have left? Enter your answer in the box as a mixed

number in simplest form.
Mathematics
1 answer:
kaheart [24]4 years ago
6 0

the answer is 31.25 because 38 - 6 = 32.

32-3/4=31.25

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7/10

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A group of 40 bowlers showed that their average score was 192. Assume the population standard deviation is 8. Find the 95% confi
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Answer:

CI=189.5,194.5

Step-by-step explanation:

From the question we are told that:

Sample size n=40

Mean \=x =192

Standard deviation\sigma=8

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From table

Critical Value of Z=1.96

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5 0
3 years ago
A computer company wants to determine the proportion of defective computer chips from a day's production. A
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Answer:

0.12 ± 1.96 * √(0.12(0.88) / 100)

Step-by-step explanation:

Confidence interval :

Phat ± Zcritical * √(phat(1 -phat) / n)

Phat = 12/100 = 0.12

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Zcritical at 95% = 1.96

Hence, we have :

0.12 ± 1.96 * √(0.12(0.88) / 100)

0.12 ± 1.96 * 0.0324961

0.12 ± 0.0636924

Lower boundary = (0.12 - 0.0636924) = 0.0563

Upper boundary = 0.12 + 0.0636924 = 0.1837

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3 years ago
Which one is true from the below:
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Statement 2 is correct
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