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Dima020 [189]
2 years ago
9

Plz help will give brilliant

Mathematics
2 answers:
Zina [86]2 years ago
6 0

Answer:

B.

Step-by-step explanation:

kolezko [41]2 years ago
3 0

Answer:

The answer is B

Step-by-step explanation:

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A random sample of the amounts for 22 purchases was taken. The mean was ​$42.97​, the standard deviation was ​$22.82​, and the m
Illusion [34]

Answer: a) 84 and b ) 2084

Step-by-step explanation:

Given : Sample standard deviation : s= $22.82

(Population standard deviation is unknown ) , so we use t-test.

Critical value or the​ 95% confidence intervals :t_{n-1}*=2.0

Formula to find the sample size :

n=(\dfrac{t^*\cdot s}{E})^2

a) E = 5

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i.e. Required sample size : n= 84

b)  E = 1

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i.e. Required sample size : n= 2084

8 0
3 years ago
Determine whether the graph represents a proportional relationship.
olya-2409 [2.1K]

No, it is not a proportional relationship because the graph does not go through the origin. A proportional relationship is supposed to be a straight line, starting from the origin. It starts on the number 4.

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3 years ago
How do I simplify 4 over 12 times 8 over 20
garri49 [273]

4 over 12 times 8 over 20

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Answer:

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Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

If you mean as an equation, it would be 12k=84

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