The average production cost for major movies is 65 million dollars and the standard deviation is 20 milliondollars. Assume the production cost distribution is normal. Suppose that 14 randomly selected major moviesare researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Roundall answers to 4 decimal places where possible.a. What is the distribution of X? X N(b. What is the distribution of z? 7 - N(c. For a single randomly selected movie, find the probability that this movie's production cost is between63 and 66 million dollars.d. For the group of 14 movies, find the probability that the average production cost is between 63 and 66million dollars.e. For part d), is the assumption of normal necessary? No Yes

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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10. The following dot plot shoes the test scores for 10 students on a unit exam. Which shape most accurately describes these data? A. Skewed left B. Skewed right C. Normal Distribution Test Resuits D. Constant + 50 60 70 80 100 Test Score LEGO xx+8 XXxx-
Please answer B, C, & D.
Use the given data values (a sample of female arm circumferences in centimeters) to identify the corresponding z scores that are used for a normal quantile plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile plot, then determine whether the data appear to be from a population with a normal distribution. a. List the z scores for the normal quantile plot. (Round to two decimal places as needed. Use ascending order.) b. identify the coordinates of each point in the normal quantile plot. Use ordered pairs for the form (x,y), where x is the sorted arm circumferences in ascending order, and y is the corresponding z score. (Round to two decimal places as needed. Use ascending order.)
D Question 24 The weights of cats is Normally Distributed. The mean weight is 10 lbs with a standard deviation of 0.2 lbs. Draw the normal curve and fill in the cut scores and percentages. Then answer the questions below: Based on a sample of 600 cats, how many would you expect to weigh more than 10.4 lbs? Based on a sample of 600 cats, how many would you expect to weigh at least 9.8 lbs. but not more than 10.2 lbs? Based on a sample of 600 cats, how many would you expect to weigh more than 10 lbs?
Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P7, the 7th percentile. This is the bone density score separating the bottom 7% from the top 93%. Which graph represents P7? Choose the correct graph below. A. P7 The bone density score corresponding to P7 is (Round to two decimal places as needed.) B. A P7 2 C. ^ P7 Ly D. A P7
Just do 2 and 3 please.
The average production cost for major movies is 66 million dollars and the standard deviation is 18 million dollars. Assume the production cost distribution is normal. Suppose that 50 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible.
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Use the following set of values for #10 - 13. Round answers to nearest hundredth, if necessary. .3, .6, 9, 1.3, .4, .6, 1.2, 1.4, 1.1, .2, .2 10. Find the mean, median, and mode(s) 11. Find the range 12. Find the interquartile range 13. Find the standard deviation
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 52.5 degrees. Low Temperature (o F) 40 - 44 45 - 49 50 - 54 55 - 59 60 – 64 D Frequency 2 9. ... The mean of the frequency distribution is degrees. (Round to the nearest tenth as needed.) Which of the following best describes the relationship between the computed mean and the actual mean? O A. The computed mean is close to the actual mean because the difference between the means is more than 5% of the actual mean. B. The computed mean is not close to the actual mean because the difference between the means is less than 5% of the actual mean. C. The computed mean is not close to the actual mean because the difference between the means is more than 5% of the actual mean. D. The computed mean is close to the actual mean because the difference between the means is less than 5% of the actual mean.
Recall the histogram of annual maximum wind speed. Frequency оооооо 25 to 30 30 to <35 35 to 40 A histogram with a single peak is unimodal. A histogram with two peaks is bimodal. A histogram with more than two peaks is multimodal. Look over the histogram again and notice the number of peaks, or modes, in the distribution. Indicate below the class interval(s) where a peak occurs. (Select all that apply.) 40 to 45 45 to < 50 50 to < 55 55 to < 60 14 12 10 60 to < 65 co 4 25 30 35 40 45 50 55 60 65 annual maximum wind speed

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