Find the 80% confidence intervals for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 30 students has a standard deviation of 2.8 years. Assume the variable is normally distributed.
Use the chi-square distribution table to find any chi-square values to three decimal places. Round the final answers to one decimal
place.

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

Consider the following function. which of the following graphs corresponds to the given function? w. x. y. z. a. z b. y c. x d.