Question: Let x be a continuous random variable that has a normal distribution with = 75 and = 14. Assuming n/N < .05, find

Let x be a continuous random variable that has a normal distribution with µ = 75 and σ = 14. Assuming n/N < .05, find the probability that the sample mean, x̅, for a random sample of 20 taken from this population will be

a. Between 68.5 and 77.3

b. Less than 72.4

Step by Step Solution

★★★★★

3.38 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

75 14 and n 20 x 75 and x n 1... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

492-M-S-S-D (1727).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Let x be a continuous random variable that has a distribution skewed to the right with = 60 and = 10. Assuming n/N

Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 29 and 36 b. between 22 and...

Let x be a continuous random variable that is normally distributed with a mean of 80 and a standard deviation of 12. Find the probability that x assumes a value a. Greater than 69 b. Less than 73 c....

Question 1 of 36 J1 E Viewr Policies Current Attempt in Progress Prices of a certain item have a distribution that is skewed to the left with outliers in the left tail. Which of the measures of...

7.44 Let x be a continuous random variable that has a normal distribution with 75 and 14. Assuming nN .05, find the probability that the sample mean, for a random sample of 20 taken from this...

Question 18 of 36 - 1 E An ofce supply company conducted a survey before marketing a new paper shredder designed for home use. In the survey, 80% of people who used the shredder were satised with it....

1) Let X be a discrete random variable that possesses a binomial distribution with n=5 and p=0.90. What are the mean and standard deviation of this probability distribution? Round your answers to...

please help with the questions A variable is normally distributed with a mean of 100 and a standard deviation of 10. A student wanted to find the percentage of observations of the variable lying...

Accidental poisoning of children is a great concern to the Poison Control Center. From the past, 12.5% of all children reported with accidental poisoning required hospitalization. For the years 1993...

3. Buses arrive to a bus stop according to an exponential distribution with rate ?= 4 busses/hour. If you arrived at 8:00 am to the bus stop, a) what is the expected time of the next bus? b) Assume...

Why might some people consider a contractor to be a serious threat to their organizations information systems?

How does a decision on advancement present an organizational dilemma?

For financial information to be relevant, it must also be timely. digital. certified by an auditor. perfect.

What is a bank run?

Amazon.coms revenues are shown in Table 37 for various years. Let r be Amazon.coms annual revenues (in billions of dollars) at t years since 2010. A model of the situation is r = 13.6t + 34.18. a....

Costcos net sales are shown in Table 38 for various years. Let n be Costcos annual net sales (in billions of dollars) at t years since 2005. A model of the situation is n = 8.7t + 34.4. a. Use...

Use the slope and y-intercept of the line y = 2x - 1 to graph the equation y = 2x - 1 by hand. Then choose two points that lie on the graph, and show that both of the corresponding ordered pairs are...

18. The most commonly used form required by TRID at settlement is: A. the seller's property disclosure. B. the lead-based paint disclosure. C. the closing disclosure (CD). D. the loan estimate (LE)

Rachel is 40 years old. She plans on retiring in 25 years when she will be 65 years old. Rachel believes she will live until she is 95. In order to live comfortably, she needs a substantial...

Homework - Chapter 13 Seved Help Save & Exit Submit Check my work 3 You have been given the following return information for a mutual fund, the market index, and the risk free rate. You also know...