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Number of Farms A random sample of the number of farms (in
Chapter 7, Problem 16E(choose chapter or problem)
Problem 16E
Number of Farms A random sample of the number of farms (in thousands) in various states follows. Estimate the mean number of farms per state with 90% confidence. Assume σ = 31.0.
47 95 54 33 64 4 8 57 9 80
8 90 3 49 4 44 79 80 48 16
68 7 15 21 52 6 78 109 40 50
29
Source New York Times Almanac.
Questions & Answers
QUESTION:
Problem 16E
Number of Farms A random sample of the number of farms (in thousands) in various states follows. Estimate the mean number of farms per state with 90% confidence. Assume σ = 31.0.
47 95 54 33 64 4 8 57 9 80
8 90 3 49 4 44 79 80 48 16
68 7 15 21 52 6 78 109 40 50
29
Source New York Times Almanac.
ANSWER:
Solution
Step 1 of 2
We have to estimate the mean no.of farms per state with 90% confidence
Given that assume
Now the sample mean
=
=43.452