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.
1 answer:
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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<span>Yes, so our unit rate is 1:6</span>
There’s not enough information to answer your question.
Answer:Hi,
Let the number be x
Twice the number is 2x
Five less than twice the number is 2x-5, which is given as 9
Therefore, 2x-5 = 9
or, 2x = 9+5
or, 2x = 14
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Thus the number is 7.
Cheers
Step-by-step explanation:
To find the answer, we multiply 1,047.30 by 6.2% which is 0.062 in percentage.
1047.30 x 0.062 = 64.93
64.93 is being taken away.
