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Luda [366]
3 years ago
7

Pls answer number 3,4,7, and 8

Mathematics
1 answer:
WINSTONCH [101]3 years ago
8 0

Answer:

number 4 is

Step-by-step explanation:

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To estimate the mean of a population with unknown distribution shape and unknown standard deviation, we take a random sample of
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Answer:

t_{critical} = \pm 1.7793                        

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 64

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92% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,

Degree of freedom = n - 1 = 63

t_{critical}\text{ at degree of freedom 63 and}~\alpha_{0.01} = \pm 1.7793  

22.3 \pm 1.7793(\dfrac{8.8}{\sqrt{64}} ) = 22.3 \pm 1.95723 = (20.34,24.26)

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3 years ago
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Novay_Z [31]
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The correct answer is y = 1.5x, A.
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