b. The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage? The probability is 90% that the sample percentage will be contained above (Type integers or decimals rounded to one decimal place as needed.) % and below %.

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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
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Please help with part b. Thanks
An institute reported that 70% of its members indicate that lack of ethical culture within financial firms
has contributed most to the lack of trust in the financial industry. Suppose that you select a sample of
100 institute members. Complete parts (a) through (d) below.
a. What is the probability that the sample percentage indicating that lack of ethical culture within financial
firms has contributed the most to the lack of trust in the financial industry will be between 61% and 71%?
0.5627 (Type an integer or decimal rounded to four decimal places as needed.)
b. The probability is 90% that the sample percentage will be contained within what symmetrical limits of
the population percentage?
The probability is 90% that the sample percentage will be contained above
(Type integers or decimals rounded to one decimal place as needed.)
% and below
%.
Ans
Transcribed Image Text:An institute reported that 70% of its members indicate that lack of ethical culture within financial firms has contributed most to the lack of trust in the financial industry. Suppose that you select a sample of 100 institute members. Complete parts (a) through (d) below. a. What is the probability that the sample percentage indicating that lack of ethical culture within financial firms has contributed the most to the lack of trust in the financial industry will be between 61% and 71%? 0.5627 (Type an integer or decimal rounded to four decimal places as needed.) b. The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage? The probability is 90% that the sample percentage will be contained above (Type integers or decimals rounded to one decimal place as needed.) % and below %. Ans
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