The average number of pushups a us marine does daily is μ = 300, with a standard deviation of σ = 50. A random sample of n = 36 marines is selected. What is the probability that the sample mean is at most 320 push-ups (given: qnorm(0. 9918)= 2. 4, qnorm(0. 8767) = 1. 60, qnorm(0. 3446) = -0. 4, qnorm(0. 0082) = -2. 4).

Based on the narrator's comments about living with the widow douglas, the reader can infer that a) the narrator doesn't care much for civilization and its strict rules. b) the narrator admires and wants to become more civilized and refined. c) the narrator is extremely religious and of high moral standing. d) the narrator desires to become a productive member of society.

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils

Balanced rock sits on a thin spike of rock in a canyon what forces keep the rock balanced on its tiny pedestal