The weight, in grams, of eight different kiwis was used to create the box plot shown above. Which of the sets of numbers below m
atches the given box plot?
A.
Weights of Kiwis: 68, 73, 75, 75, 76, 76, 78, 80
B.
Weights of Kiwis: 68, 70, 75, 75, 75, 76, 77, 80
C.
Weights of Kiwis: 68, 72, 75, 75, 76, 76, 77, 80
D.
Weights of Kiwis: 68, 70, 72, 75, 75, 76, 78, 80
A.
Weights of Kiwis: 68, 73, 75, 75, 76, 76, 78, 80
B.
Weights of Kiwis: 68, 70, 75, 75, 75, 76, 77, 80
C.
Weights of Kiwis: 68, 72, 75, 75, 76, 76, 77, 80
D.
Weights of Kiwis: 68, 70, 72, 75, 75, 76, 78, 80
2 answers:
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Answer:
The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).