QUESTION 1 The histogram of the grades on a calculus exam for a sample of 40 students is given below. The distibution of the grades is 03 025 02 0.15 0.1 0.05 60 70 60 90 100 Grade negatively skewed positively skewed symmetric, bell-shaped symmetric, not bell-shaped OUESTION 3 Retalie Frequency 6000

QUESTION 13 Eighty hamsters were trained to run a maze. The frequency distribution below presents the number of trials it took each hamster to successfully complete the maze. # of Trials 1 2 3 5 6 7 10 Frequency 5 5 11 13 12 19 Make a histogram for this frequency distribution by hand and attach your file as a pdf, jpg, or png.

Question 15

Question 5 The mean height of an adult giraffe is 19 feet. Suppose that the distribution is normally distributed with standard deviation 0.8 feet. Let X be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X N( b. What is the median giraffe height? ft. c. What is the Z-score for a giraffe that is 22 foot tall? d. What is the probability that a randomly selected giraffe will be shorter than 19.4 feet tall? e. What is the probability that a randomly selected giraffe will be between 18 and 18.8 feet tall? ft. f. The 85th percentile for the height of giraffes is Hint: Helpful videos: • Find a Probability [+] Finding a Value Given a Probability [+] Hint Question Help: Message instructor Submit Question