# Question: A data set has a mean of 80 and a

A data set has a mean of 80 and a standard deviation of 5.

a. Using Chebyshev’s theorem, what percentage of the observations fall between 70 and 90?

b. Using Chebyshev’s theorem, what percentage of the observations fall between 65 and 95?

a. Using Chebyshev’s theorem, what percentage of the observations fall between 70 and 90?

b. Using Chebyshev’s theorem, what percentage of the observations fall between 65 and 95?

## Relevant Questions

A data set has a mean of 1500 and a standard deviation of 100.a. Using Chebyshev’s theorem, what percentage of the observations fall between 1300 and 1700?b. Using Chebyshev’s theorem, what percentage of the observations ...A sample of the salaries of assistant professors on the business faculty at a local university revealed a mean income of $72,000 with a standard deviation of $3,000.a. Using Chebyshev’s theorem, what percentage of the ...Consider the following frequency distribution. Class ....... Frequency50 up to 60 .... 1060 up to 70 .... 1570 up to 80 ..... 880 up to 100 .... 2a. Calculate the sample mean.b. Calculate the sample variance and the ...Consider the following sample data:a. Calculate the covariance between the variables. b. Calculate and interpret the correlationcoefficient.The following table shows the annual returns (in percent) for Fidelity’s Electronic and Utilities funds.a. Calculate the sample mean, the sample variance, and the sample standard deviation for each fund.b. Which fund had ...Post your question