The student government association at a university wants to estimate the percentage of the student body that supports a change being considered in the academic calendar of the university for the next academic year. How many students should be surveyed if a 99% confidence interval is desired and the margin of error is to be only 10%? The student government should survey students. (Round up to the nearest integer.)

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The student government association at a university wants to estimate the percentage of the student body that supports a change being considered in the academic
calendar of the university for the next academic year. How many students should be surveyed if a 99% confidence interval is desired and the margin of error is to be
only 10%?
The student government should survey
students.
(Round up to the nearest integer.)
Transcribed Image Text:The student government association at a university wants to estimate the percentage of the student body that supports a change being considered in the academic calendar of the university for the next academic year. How many students should be surveyed if a 99% confidence interval is desired and the margin of error is to be only 10%? The student government should survey students. (Round up to the nearest integer.)
An accounting firm has 1,220 clients. From a random sample of 122 clients, 110 indicated very high satisfaction with the firm's service. Find a 95% confidence interval
for the proportion of all clients who are very highly satisfied with this firm.
The 95% confidence interval for the proportion of all clients who are very highly satisfied with this firm is from
to
(Round to four decimal places as needed.)
Transcribed Image Text:An accounting firm has 1,220 clients. From a random sample of 122 clients, 110 indicated very high satisfaction with the firm's service. Find a 95% confidence interval for the proportion of all clients who are very highly satisfied with this firm. The 95% confidence interval for the proportion of all clients who are very highly satisfied with this firm is from to (Round to four decimal places as needed.)
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