The average stock price for companies making up the DAX in Germany is $40, and the standarddeviation is $4 (Financial Time, Spring 2023). Assume the stock prices are normally distributed.1. What is the probability a company will have a stock price of at least $45?2. What is the probability a company will have a stock price of at most $50?3. What is the probability a company will have a stock price between $44 and $48?4. What is the probability a company will have a stock price no higher than $44?

Mean()=40standard deviation()=4

Answered: The average stock price for companies…

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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A professor knows that her statistics students' final exam scores have a mean of 79 and a standard deviation of 12.4. In his class, an "A" is any exam score of 90 or higher. This quarter she has 25 students in her class. What is the probability that 7 students or more will score an "A" on the final exam?
Asset A will generate a 20% return with probability 0.25; a 15% return with probability 0.50; and a -15% return with probability 0.25. The standard deviation of the return on Asset A is %. Write your answer as a percentage, rounded to 2 decimal places. Example: if the answer is 10.3478%, then write "10.35". Do not type the % sign in your answer.
The average student loan debt for college graduates is $25,600. Suppose that that distribution is normal and that the standard deviation is $11,400. Let X = the student loan debt of a randomly selected college graduate. Round all probabilities to 4 decimal places and all dollar answers to the nearest dollar.b Find the probability that the college graduate has between $13,550 and $33,450 in student loan debt. c. The middle 10% of college graduates' loan debt lies between what two numbers? Low: $ High: $
Also how much do the top 10% of customers spend?
21,22,23
According to a study done by De Anza students, the height for Asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. Suppose one Asian adult male is randomly chosen. Let X = height of the individual. Find the probability that the person is between 64 and 69 inches. The middle 40% of heights fall between what two values?Write the probability statement. State the two values. (Round your answers to one decimal place.) x1,x2 ch6#9
The average student loan debt for college graduates is $25,950. Suppose that that distribution is normal and that the standard deviation is $14,900. Let X = the student loan debt of a randomly selected college graduate. Round all probabilities to 4 decimal places and all dollar answers to the nearest dollar. a. What is the distribution of X? X - N( b Find the probability that the college graduate has between $29,350 and $41,850 in student loan debt. c. The middle 10% of college graduates' loan debt lies between what two numbers? Low: $ High: $
answer part b only. it is not 29.665
The Greenville Power Authority states that the mean monthly energy bill for their customers is $228 with a standard deviation of $38. They know that energy bills follow a normal distribution. a. Between what two values do we expect 99.7% of energy bill’s to fall? b. What is the probability of a randomly selected energy bill at least $190?
a. The mean of this distribution is b. The standard deviation is c. The probability that the the child will be older than 5 years old?
4. The time between calls to a plumbing supply business is exponentially distributed with a mean time between calls of 15 minutes. What is the probability that there are no calls within a 30-minute interval?

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