The Hiking Club plans to go camping in a State park where

A study reports that 61 of Americans support increased funding for public schools If 3 Americans are chosen at random what is the probability that a All 3 of them support increased funding for public schools b None of the 3 support increased funding for public schools c At least one of the 3 support increased funding for public schools Next Question

Suppose the body mass index BMI of a group of athletes has a population mean of 24 98 and a standard deviation of 4 18 If a random sample of 150 athletes is chosen for a study compute the standard deviation of the sampling distribution of the mean Give your answer to two decimal places Standard deviation of the sampling distribution of the mean

e probability is 0 3 that a traffic fatality involves an intoxicated or alcohol impaired driver or nonoccupant In six traffic fatalities find the probability that the number Y which involve an intoxicated or alcohol impaired driver or nonoccupant is exactly three at least three at most three between two and four inclusive Find and interpret the mean of the random variable Y Obtain the standard deviation of Y The probability that exactly three traffic fatalities involve an intoxicated or alcohol impaired driver or nonoccupant is ound to four decimal places as needed

20 The numbers 1 through 8 are written in separate slips of paper and the slips are placed into a box Then 4 of these slips are drawn at random What is the probability that the drawn slips are 1 2 3 and 4 in that order A 0 01429 B 0 34296 C 0 000595 D 0 01428 2 20

2 It is thought by some researchers that exercise for college students is related to the sex of the student A survey was taken of 470 college students in California that relates their sex to the frequency of exercise per week The results are summarized in the contingency table below Male Female Totals No exercise per week 0 3893 0 4723 0 4720 88 0 4357 72 160 Once or twice per week More than twice per week Totals 76 58 222 248 470 If one of the 470 college students is selected at random what is the probability that the student is a male given that the student exercises more than twice per week Round your answer to 4 decimal places None of the above 85 161 91 149

39 9 of consumers believe that cash will be obsolete in the next 20 years Assume that 6 consumers are randomly selected Find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years The probability is Round to three decimal places as needed

t a large high school outside of Chicago there are two students running for class president Ronald and Bo 60 of the students in the school support Bo and the remaining 40 support Ronald If you randomly sampled 12 students what is the probability that more than half of your sample is comprised of Ronald supporters Assume independence between students Note Round to the nearest thousandth

A bag contains 10 marbles Four of them are red three blue two white and one yellow A marble is drawn at random What is the probability that it is not red Be sure to reduce

Select the correct answer from each drop down menu Of the 16 cards drawn from a standard deck of 52 cards experimental probability of drawing a spade is a spade from a standard deck of cards is 5 of the cards are spades Based on the cards that were drawn the and the difference of the experimental and theoretical probabilities of drawing

Select the correct answer from the drop down menu A number cube is biased to land on the number 3 about 50 of the time It is rolled 42 times and the outcomes are recorded The least likely result for the number cube to land on the number 3 is times 25 18 et Next