e average amount of money spent for lunch per person in the college cafeteria is $6 and the standard viation is $2.51. Suppose that 13 randomly selected lunch patrons are observed. Assume the distributi money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X N( b. What is the distribution of ? a N( c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.4459 and $5.844. d. For the group of 13 patrons, find the probability that the average lunch cost is between $5.4459 a $5.844. e. For part d), is the assumption that the distribution is normal necessary? O NoO Yes nt: ome Helpful Videos: Finding the Sampling Distribution [+] • Finding a Probability Using the Central Limit Theorem [+] Finding Value Given a Probability Using the Central Limit Theorem [+] • The Central Limit Theorem For Sums [+] lint

e average amount of money spent for lunch per person in the college cafeteria is $6 and the standard viation is $2.51. Suppose that 13 randomly selected lunch patrons are observed. Assume the distributi money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X N( b. What is the distribution of ? a N( c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.4459 and $5.844. d. For the group of 13 patrons, find the probability that the average lunch cost is between $5.4459 a $5.844. e. For part d), is the assumption that the distribution is normal necessary? O NoO Yes nt: ome Helpful Videos: Finding the Sampling Distribution [+] • Finding a Probability Using the Central Limit Theorem [+] Finding Value Given a Probability Using the Central Limit Theorem [+] • The Central Limit Theorem For Sums [+] lint

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Description: The average amount of money spent for lunch per person in the college cafeteria is $6 and the standarddeviation is $2.51. Suppose that 13 randomly selected lunch patrons are observed. Assume the distributionof money spent is normal, and round all an

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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c. mean is 1 and the standard deviation is 0. O d. mean and the standard deviation can have any value. QUESTION 2 Which of the following is a characteristic of the standard normal probability distribution? a. The mean, median, and the mode are not equal b. The distribution is not symmetrical c. The standard deviation must be 0 d. The standard deviation must be 1 Click Save and Submit to save and submit. Click Save All Answers to save all answers.
After probability, part b is I also am asked to solve for “the mean of sampling distribution
?) H Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0.31. Sketch the region. Choose the correct graph below. A. В. O C. O D. -0.31 0.31 0.31 -0.31 0.31 The probability is. (Round to four decimal places as needed.) Question Viewer rce
Using table 2, find the probability that an accident victim was from Connecticut and had no restraints on. Detail your answer using the lettering given, e.g., P (A or C) = ... Table 2: Relative Frequencies Table A B Restraints No Restraints C California 0.622 0.309 0.931 D Connecticut 0.042 0.026 0.069 0.664 0.336 1.000
Pa.90
ols A census collected data on everyone that lived in a certain small town. The random variable X is the number of girls born to a randomly selected couple in that town who has four children. Its probability distribution is shown below. Complete parts a through c. 0 0 1 0.2447 2 0.3208 3 0.2415 4 0.1073 P(X=x) 0.0857 ... a. Find and interpret the mean of the random variable. =(Round to four decimal places as needed.) View an example Help me solve this Get more help. F5 A MacBook Air F6 F7 DII Clear all FB F9 I Check answer F10 F11
Using the appropriate table in textbook (Keller, Appendix B) or Excel, a. find z.05. Draw the distribution and locate the z-value (z.os) in the distribution. b. find-z.05. Draw the distribution and locate the z-value (-z.05) in the distribution. c. find t50,.01. Draw the distribution and locate the t-value (t50,.01) in the distribution. d. find-t50,.01. Draw the distribution and locate the t-value (-t50,.01) in the distribution. e. find X²0,.05. Draw the distribution and locate the x²-value (x²0,05) in the distribution. f. find F2,20,.05. Draw the distribution and locate the F-value (F2,20,.05) in the distribution.
Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant D C 247 Order Accurate 134 Order Not Accurate 34 14 If one order is selected, find the probability of getting food that is not from Restaurant A. A 330 40 B 280 59 The probability of getting food that is not from Restaurant A is (Round to three decimal places as needed.)
The probability distribution for the number of students in Statistics classes offered at a small college is given, but one value is missing. Fill in the missing value, then answer the questions that follow. X P(X) 22 0.18 23 0.22 24 0.25 25 26 0.2 Find the mean number of students in a Statistics class at the college: Find the standard deviation of the number of students in a Statistics class at the college:
Help with c and d
B Choosing a topic Sk.. For data that is not normally distributed we can't use z-scores. However, there is an equation that works on any distribution. It's called Chebyshev's formula. The formula 1 where p is the minimum percentage of scores that fall within k k2 is p = 1 - standard deviations on both sides of the mean. Use this formula to answer the following questions. a) If you have scores and you don't know if they are normally distributed, find the minimum percentage of scores that fall within 2.2 standard deviations on both sides of the mean? b) If you have scores that are normally distributed, find the percentage of scores that fall within 2.2 standard deviations on both sides of the mean? c) If you have scores and you don't know if they are normally distributed, how many standard deviations on both sides of the mean do we need to go to have 64 percent of the scores? Note: To answer part c you will need to solve the equation for k.
K The following data represent the number of drivers involved in a fatal crash in 2016 in various light and weather conditions. Complete parts (a) through (c) below. Click the icon to view the data for fatal crashes in 2016. (a) Among fatal crashes in unknown weather conditions, what is the probability that a randomly selected fatal crash occurs when it is dawn/dusk? The probability that a randomly selected fatal crash in unknown weather conditions occurs when it is dawn/dusk is approximately. (Round to three decimal places as needed.) Data table Weather Daylight Dark, but Lighted 5875 497 51 54 255 Normal Rain Snow/Sleet Other Unknown 14,307 875 219 125 810 (...) Dark 8151 681 156 220 548 Dawn/Dusk Other 1183 87 40 71 65 8 2 9 133 X