2. A simple random sample of 30 ears of corn is collected from a field. The ears of corn have a mean weight of 0.21 kg with a standard error of the mean of 0.006. Which of the following should be used to compute an 80% confidence interval for the mean weight of all the field's ears of corn? (A) 0.21±0.854(0.006) 0.006 (B) 0.21 ±0.854 V30 (C) 0.21±1.311(0.006) 0.006 (D) 0.21±1.311 T30 0.006 (E) 0.21 ±1.96 J30

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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2. A simple random sample of 30 ears of corn is
collected from a field. The ears of corn have a
mean weight of 0.21 kg with a standard error
of the mean of 0.006. Which of the following
should be used to compute an 80% confidence
interval for the mean weight of all the field's
ears of corn?
(A) 0.21±0.854(0.006)
0.006
(B) 0.21 ±0.854
V30
(C) 0.21±1.311(0.006)
0.006
(D) 0.21±1.311
T30
0.006
(E) 0.21 ±1.96
J30
Transcribed Image Text:2. A simple random sample of 30 ears of corn is collected from a field. The ears of corn have a mean weight of 0.21 kg with a standard error of the mean of 0.006. Which of the following should be used to compute an 80% confidence interval for the mean weight of all the field's ears of corn? (A) 0.21±0.854(0.006) 0.006 (B) 0.21 ±0.854 V30 (C) 0.21±1.311(0.006) 0.006 (D) 0.21±1.311 T30 0.006 (E) 0.21 ±1.96 J30
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