A random sample of 9 fields of corn has a mean yield of 34.7 bushels per acre and standard deviation of 8.04 bushels per acre. D
1 answer:
Answer:
98% Confidence interval: (26.939,42.461)
Step-by-step explanation:
We are given the following in the question:
Sample mean, = 34.7 bushels per acre
Sample size, n = 9
Alpha, α = 0.05
Sample standard deviation, s = 8.04 bushels per acre
Degree of freedom = n - 1 = 8
98% Confidence interval:
Putting the values, we get,
is the required confidence interval for the true mean yield.
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