The american restaurant association collected information

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The American Restaurant Association collected information on the number of meals eaten outside the home per week by young married couples. A survey of 100 couples showed the sample mean number of meals eaten outside the home was 3.45 meals per week, with a standard deviation of .75 meals per week.

a) Construct a 99% confidence interval for the population mean.

b) How would the interval change if you lowered the confidence level from 99% to 95%?

Reference no: EM13627542

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