Let the random variable X represent the weight of male black bears before they begin hibernation. Research has shown that X can be modeled by a Normal distribution with a mean of 250 pounds and a standard deviation of 50 pounds. What is the probability that a randomly selected male black bear will weigh more than 325 pounds before beginning hibernation? a
0.0668
b
0.7486
c
0.2514
d
0.8531
e
0.9332

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !