The marketing department store average who enter the store every 5 minutes. She randomly selects 5-minute intervals and counts the number of arrivals at the store. She obtains the figures 55, 32, 41, 42, 56, 80, 38, 29, 32, and 75. The analyst assumes the number of arrivals is normally distributed. Using these data, the analyst computes a 95% confidence interval to estimate the mean value for all 5-minute intervals. What interval values does she get? Appendix A Statistical Tables (Round the intermediate values to 2 decimal places, e.g. 25.31. Round your answers to 2 decimal places, e.g. 25.31.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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The marketing director of a large department store wants to estimate the average number of customers who enter the store every 5 minutes. She randomly selects 5-minute intervals and counts the number of arrivals at the store. She obtains the figures 55, 32, 41, 42, 56, 80, 38, 29, 32, and 75. The analyst assumes the number of arrivals is normally distributed. Using these data, the analyst computes a 95% confidence interval to estimate the mean value for all 5-minute intervals. What interval values does she get?

(Appendix A Statistical Tables)

(Round the intermediate values to 2 decimal places, e.g. 25.31. Round your answers to 2 decimal places, e.g. 25.31.)

\[ \text{box} \leq \mu \leq \text{box} \]
Transcribed Image Text:The marketing director of a large department store wants to estimate the average number of customers who enter the store every 5 minutes. She randomly selects 5-minute intervals and counts the number of arrivals at the store. She obtains the figures 55, 32, 41, 42, 56, 80, 38, 29, 32, and 75. The analyst assumes the number of arrivals is normally distributed. Using these data, the analyst computes a 95% confidence interval to estimate the mean value for all 5-minute intervals. What interval values does she get? (Appendix A Statistical Tables) (Round the intermediate values to 2 decimal places, e.g. 25.31. Round your answers to 2 decimal places, e.g. 25.31.) \[ \text{box} \leq \mu \leq \text{box} \]
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