Mathematics, 19.08.2021 21:20 lakeshia8880
Suppose that a manager is interested in estimating the average amount of money customers spend in her store. After sampling 36 transactions at random, she found that the average amount spent was $37.85. She then computed a 99% confidence interval to be between $32.89 and $ 42.81. Which statement gives a valid interpretation of the interval?
a. The store manager is 99% confident that the average amount spent by all customers is between $32.89 and $42.81.
b. There is a 99% chance that the mean amount spent by all customers is between $32.89 and $42.81.
c. There is a 99% chance that a randomly selected customer will spend between $32.89 and $42.81.
d. The store manager is 99% confident that the average amount spent by the 36 sampled customers is between $32.89 and $ 42.81
Answers: 1
Mathematics, 21.06.2019 15:30
Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9
Answers: 1
Mathematics, 21.06.2019 16:00
Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.
Answers: 2
Mathematics, 22.06.2019 03:00
An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).
Answers: 2
Mathematics, 22.06.2019 03:30
Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3
Answers: 1
Suppose that a manager is interested in estimating the average amount of money customers spend in he...
Mathematics, 29.09.2021 01:00
Mathematics, 29.09.2021 01:00
Business, 29.09.2021 01:00
Chemistry, 29.09.2021 01:00
English, 29.09.2021 01:00
Spanish, 29.09.2021 01:00
Chemistry, 29.09.2021 01:00
Arts, 29.09.2021 01:00
Mathematics, 29.09.2021 01:00
Mathematics, 29.09.2021 01:00