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hodyreva [135]
3 years ago
14

I need help with this quickly Please!

Mathematics
2 answers:
olga_2 [115]3 years ago
7 0
I think 135 is the answer
Anit [1.1K]3 years ago
5 0
135 is the answer. please give me brainliest
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a randon sample of 16 bookcases in one company have a mean height of 67.5 inches and a standard deviation of 2.1 inches. Constru
Lynna [10]

Answer:

For 99% of confidence interval is 67.5±1.3524

Step-by-step explanation:

Given:

Mean height =67.5 inches

Standard deviation:2.1 inches

Z at 99%.

No of samples 16.

To find:

confidence interval

Solution:

We have formula for confidence interval,

=mean ±Z*{standard deviation/sqrt(no.of observation)}

Now

Z=99%

has  standard  value as ,

Z=2.576

Confidence interval= mean±Z{standard deviation/sqrt(No. of samples)}

=67.5±2.57{(2.1/sqrt(16)}

=67.5±2.576(2.1/4)

=67.5±1.3524

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3 years ago
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ASAP! Students just finished taking test and these are the scores: 75, 80, 62, 98, 90, 86, 55, 86, 92, 66. What is the range of
harkovskaia [24]
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4 0
3 years ago
Which is bigger 5/8 or 7/12
gladu [14]
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4 0
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Does anyone know this??
HACTEHA [7]
Answer: 0.34

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3 years ago
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