In a survey, cconomists' confidence about the resilience of the cconomy is measured 2. from 0 to 100. If the sample mean and sample standard deviation of 9 cconomists' confidence are 76 and 10.6 respectively. (i) Describe how to construct a 95% confidence interval for 4, cconomists' average confidence. (ii) What assumptions you made in answering (i)?

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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2.
In a survey, cconomists' confidence about the resilience of the cconomy is mcasured
from 0 to 100. If the sample mean and sample standard deviation of 9 cconomists' confidence are 76 and
10.6 respectively.
(i) Describe how to construct a 95% confidence interval for 4, cconomists' average confidence.
(ii) What assumptions you made in answering (i)?
Transcribed Image Text:2. In a survey, cconomists' confidence about the resilience of the cconomy is mcasured from 0 to 100. If the sample mean and sample standard deviation of 9 cconomists' confidence are 76 and 10.6 respectively. (i) Describe how to construct a 95% confidence interval for 4, cconomists' average confidence. (ii) What assumptions you made in answering (i)?
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