(Solution) MATH225 Week 5 Assignment Understanding the Empirical Rule

Question

A random sample of SAT scores has a sample mean of x¯=1060 and sample standard deviation of s=195.  Use the Empirical Rule to estimate the approximate percentage of SAT scores that are less than 865.

Round your answer to the nearest whole number (percent).

Provide your answer below:

Ans: 16%

Question

A random sample of CO2 levels in a school has a sample mean of x¯=598.4 ppm and sample standard deviation of s=86.7 ppm.  Use the Empirical Rule to determine the approximate percentage of CO2 levels that lie between 338.3 and 858.5 ppm.

Ans:___________

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