**Problem Statement:**Los Angeles workers have an average commute of 33 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly selected LA worker. Round all answers to 4 decimal places where possible.**Questions:**a. What is the distribution of X? \( X \sim N( \, \Box \, , \, \Box \, ) \)b. Find the probability that a randomly selected LA worker has a commute that is longer than 34 minutes. \( \Box \)c. Find the 85th percentile for the commute time of LA workers. \( \Box \) minutes**Note:** The question involves calculating probabilities and percentiles for a normally distributed variable using the given mean and standard deviation.

Answered: Los Angeles workers have an average…

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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Please answer B, C, & D.
Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a standard deviation o=20. Find the probability that a randomly selected adult has an IQ between 88 and 122. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 88 and 122 is (Type an integer or decimal rounded to four decimal places as needed.) C
The average number of words in a romance novel is 64,289 and the standard deviation is 17,272. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible.b. Find the proportion of all novels that are between 62,562 and 79,834 words. ________________c. The 85th percentile for novels is words. (Round to the nearest word) ________________d. The middle 70% of romance novels have from _______ words to _______ words. (Round to the nearest word)
Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and standard deviation of 1.00degreesC. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to Upper P 90, the 90th percentile. This is the temperature reading separating the bottom 90% from the top 10%.
The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the pie chart. First construct the frequency distribution. Weekly study hours Class Frequency, f 0-4 5-9 0-4 hours (3 people) 10-14 5-9 hours (14 people) 10-14 hours (19 people) 15-19 15-19 hours (21 people) 20-24 20-24 hours (14 people) O 25-29 hours (13 people) 25-29 30+ hours (4 people) 30+ Print Done
I’ve already posted this one, but I’m posting it again, because I need to be shown what to input into my TI-84 Plus calculator to solve.
ASAP! PREVIOUS ANSWERS ARE WRONG AND INCOMPLETE. PLEASE ANSWER WITHIN AN HOUR TO GET A LIKE. FOLLOW THE INSTRUCTIONS TO RECEIVE A THUMS UP
Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and standard deviation of 1.00 degrees C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to Upper P 84, the 84 th percentile. This is the temperature reading separating the bottom 84 % from the top 16 %. A. Which graph represents Upper P 84? B. The temperature for Upper P 84 is approximately (Round to two decimal places as needed.)
K The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to view page 1 of the table. Click to view page 2 of the table. a. The probability that a pregnancy will last 308 days or longer is (Round to four decimal places as needed.) b. Babies who are born on or before (Round to the nearest integer as needed.) days are considered premature. .
Assume that adults have IQ scores that are normally distributed with a mean of u =100 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ less than 115. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ less than 115 is (Type an integer or decimal rounded to four decimal places as needed.)
The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they left to return home. The tourists were asked how many days they spent on their visits. Their responses were as follows. 9, 10, 8, 4, 9 Send data to calculator Find the standard deviation of this sample of numbers. Round your answer to two decimal places. X
The numbers of courses taught per semester by a random sample of university professors are shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Make a frequency distribution for the data. X 1 3 f Number of professors 25- 20- 15- 10- 4 20 23 15 1 2 3 4 Number of courses taught per semester

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