Approximately what percent of the values in a sample are within (plus or minus) 2 standard deviations of the mean using the empirical rule?

Approximately what percent of the values in a sample are within (plus or minus) 2 standard deviations of the mean using the empirical rule?

Suppose that the mean height of 10th grade boys is 69 inches with a standard deviation of 2 inches and that it follows a Normal distribution. Using the empirical rule, determine the percentage of...

suppose the weights of eggs are normally distributed with a mean of 55 grams and standard deviation of 9 grams. According to the empirical rule, for the middle 95% of all eggs we would expect the...

I would like to know how to go about getting the answer to these questions. 1. Empirical Rule: Mean is 84 with a standard deviation of 7. Approximately how much is between...

The normal distribution is set up with empirical rule. Mean: $55 Standard deviation: $18

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