The data below shows the survey results of 75 randomly selected students. Student Travel Over Spring Break
Travel Plans
Number of Students
Not traveling
34
Traveling by plane
10
Traveling by train
6
Traveling by car
23
Traveling by bus
2

The school has 300 students total. Based on the results of the poll, how many of the school’s students should be expected to travel by plane over spring break? Show your work.

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Convert (-3,0) to polar form. a. (3,0’) b. (-3,180’) c. (3,180’) d. (3,360’)