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# M&M project: Construct a 95% Confidence Interval

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M&M Project: Part 3

Use the M&M data to complete this assignment. StatCrunch can be used to assist with the calculations. A link for StatCrunch can be found under Tools for Success in Course Home. Here is also a link:

http://statcrunch.pearsoncmg.com/statcrunch/larson_les4e/dataset/index.html. Submit your answers in Excel, Word, or pdf format.

If calculating by hand, be sure to keep at least 4-6 decimal places for the sample proportions to eliminate large rounding errors.

o Construct a 95% Confidence Interval for the proportion of blue M&M candies.

o Construct a 95% Confidence Interval for the proportion of orange M&M candies.

o Construct a 95% Confidence Interval for the proportion of green M&M candies.

o Construct a 95% Confidence Interval for the proportion of yellow M&M candies.

o Construct a 95% Confidence Interval for the proportion of red M&M candies.

o Construct a 95% Confidence Interval for the proportion of brown M&M candies.

o Construct a 95% Confidence Interval for the mean total number of candies (large samples).

o BONUS: How many candies should be sampled to obtain a 95% CI of the proportion of blue candies with a 4% margin of error if the known proportion of blue candies is 0.24?

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