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puteri [66]
2 years ago
5

The mean number of hours of study time per week for a sample of 562 students is 23. If the margin of error for the population me

an with a 98% confidence interval is 2.1, construct a 98% confidence interval for the mean number of hours of study time per week for all students.
Mathematics
1 answer:
Vadim26 [7]2 years ago
3 0

Answer:

The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).

Step-by-step explanation:

Confidence interval:

Sample mean plus/minus the margin of error.

In this question:

Mean of 23.

Margin of error 2.1.

Then

23 - 2.1 = 20.9

23 + 2.1 = 25.1

The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).

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Answer:

74

Step-by-step explanation:

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8 0
3 years ago
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2. Kim is x years old. Jordan is 7 years older than Kim. Four times Jordan’s age is equal to 200. (a) Write an equation that cou
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(a) Kim x years old
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3 years ago
Given x=-3, y=6, and z=-4 xz/-2y
zimovet [89]

Answer:

-1

Step-by-step explanation:

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you get:

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8 0
3 years ago
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AABC has vertices at (1,5), (4,8), and (16, 12). A second triangle, ADEF, has vertices at (4, 20), (16, 32), and (64, 48). If th
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Answer: the first one

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5 0
3 years ago
Please help thx a bunch
kirza4 [7]
A.
2/3A=-24
time both sides by 3/2
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B.
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times both sides by 0.2
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distance between 2 points x and y is |x-y|

so
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|-72-(-4)|=|-72+4|=|-68|=68
the distance is 68
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3 years ago
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