The normal curve shown represents the sampling distribution of a sample mean for sample size n = 25, selected at random from a population with standard deviation \sigma_xσ x ​ . Which of the following is the best estimate of the standard deviation of the population, \sigma_xσ x ​ ?

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.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Find the missing factor. write your answer inexponential form.9^2=9^4×