The average score on an exam is 78. A test is given to 40 students and the average on the exam was 82 with a standard deviation of 14. a) At the .01 level did the students do better than expected? (p = .039)
b) How do you explain the 4 point increase?
C) Interpret the p-value:
D) What is the only type of error that could have occurred

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.

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?