As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.Approximately how many players had weights between 235 and 252 pounds?
A. 37
B. 100
C. 50
D. 200
E. none of these
Answer: D
You might also like to view...
Solve the problem.Two boats are pulling a disabled vessel toward the landing dock with forces of 840 lb and 820 lb. The angle between the forces is 29.6°. Find the direction and magnitude of the equilibrant.
A. 1605 lb at an angle of W 75.4° Nwith the 820-lb force B. 1605 lb at an angle of W 14.6° N with the 840-lb force C. 1605 lb at an angle of N 14.6° W with the 840-lb force D. 160 lb at an angle of N 75.4° W with the 840-lb force
Solve the problem.The motion of a spring-mass system is described by the equation 
where y is the distance in feet from the equilibrium position and t is time in seconds. If the weight is 22 feet from the ceiling in a state of equilibrium, find the distance from the ceiling at time t = 2.
A. 20 ft B. 22 ft C. 16 ft D. 18 ft
Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
?
A.
AB = 
Tuition for Student 1 is $971, tuition for Student 2 is $683, and tuition for Student 3 is $690.
B.
AB = 
Tuition for Student 1 is $972, tuition for Student 2 is $681, and tuition for Student 3 is $680.
C.
AB = 
Tuition for Student 1 is $965, tuition for Student 2 is $683, and tuition for Student 3 is $666.
D.
AB = 
Tuition for Student 1 is $982, tuition for Student 2 is $667, and tuition for Student 3 is $688.
Let A = {q, s, u, v, w, x, y, z}, B = {q, s, y, z}, 
and 
Specify the following set.B ? C
A. {y, z} B. {q, s, v, w, x, y, z} C. {q, s, u, w, y, z} D. {q, w, y, z}