A television sports commentator wants to estimate the proportion of citizens who "follow professional football." Compl
Posted: Wed May 11, 2022 5:08 pm
A television sports commentator wants to estimate the proportion
of citizens who "follow professional football." Complete parts
(a) through (c).
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1). LOADING...
Click here to view the standard normal distribution table (page
2). LOADING...
Question content area bottom Part 1 (a) What sample size should
be obtained if he wants to be within 2 percentage points with 96%
confidence if he uses an estimate of 54% obtained from a poll?
The sample size is enter your response here. (Round up to the
nearest integer.)
Part 2 (b) What sample size should be obtained if he wants to
be within 2 percentage points with 96% confidence if he does not
use any prior estimates? The sample size is enter your response
here. (Round up to the nearest integer.)
Part 3 (c) Why are the results from parts (a) and (b) so
close? A. The results are close because the margin of error 2% is
less than 5%. B. The results are close because 0.54(1−0.54)=0.2484
is very close to 0.25. C. The results are close because the
confidence 96% is close to 100%.
of citizens who "follow professional football." Complete parts
(a) through (c).
Click here to view the standard normal distribution table (page
1). LOADING...
Click here to view the standard normal distribution table (page
2). LOADING...
Question content area bottom Part 1 (a) What sample size should
be obtained if he wants to be within 2 percentage points with 96%
confidence if he uses an estimate of 54% obtained from a poll?
The sample size is enter your response here. (Round up to the
nearest integer.)
Part 2 (b) What sample size should be obtained if he wants to
be within 2 percentage points with 96% confidence if he does not
use any prior estimates? The sample size is enter your response
here. (Round up to the nearest integer.)
Part 3 (c) Why are the results from parts (a) and (b) so
close? A. The results are close because the margin of error 2% is
less than 5%. B. The results are close because 0.54(1−0.54)=0.2484
is very close to 0.25. C. The results are close because the
confidence 96% is close to 100%.