Calculate a confidence interval

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Q1. = 500 (mean daily sales)S = 100 (standard deviation of sample)n = 25 (sample size)

Suppose a fast-food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the item at a similar outlet and observed the following results:

The restaurant manager wants to know what range the mean daily sales should fall 95 percent of the time. Perform this calculation.

Q2. In a survey of 500 people, 60% responded with agreement to an attitude question. Calculate a confidence interval at 95% to get an interval estimate for a proportion.

Q3. Suppose the speed limits in thirteen countries in miles per hour are as follows:

What is the mean, median, and mode for these data? Feel free to use your computer (statistical software or spreadsheet) to get the answer. Which is the best measure of central tendency for this data?

Please don't post answers in image format. Need detailed explanation

Reference no: EM133036428

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