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Are there any thoughts a question involving standard deviation
The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average age in the sample was 22.5 years with a sample standard deviation of 4.5 years. Please answer the following questions:
a. Construct a 95% confidence interval estimate for the mean of the consumers' age.
b. Suppose a sample of 41 was selected (with the same mean and the sample standard deviation). Construct a 90% confidence interval for the mean of the consumers' age.
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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