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In-s [12.5K]
3 years ago
5

A simple random sample of 90 is drawn from a normally distributed population, and the mean is found to be 138, with a standard d

eviation of 34. What is the 90% confidence interval for the population mean? Use the table below to help you answer the question.
Confidence Level
90%
95%
99%
z*-score
1.645
1.96
2.58

Remember, the margin of error, ME, can be determined using the formula mc021-1.jpg.
128.75 to 147.25
130.98 to 145.02
132.10 to 143.90
137.38 to 138.62
Mathematics
2 answers:
andrey2020 [161]3 years ago
7 0

Answer:

His answer is C on edge so maybe that's what he meant?

Step-by-step explanation:

igomit [66]3 years ago
3 0

Answer:

C. 132.10 to 143.90

Step-by-step explanation:

NONE

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Eva8 [605]

Answer:

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Step-by-step explanation:

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--------------------------

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Step-by-step explanation:

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