Question: A variable is normally distributed with mean 68 and standard deviation 10. a. Determine and interpret the quartiles of the variable. b. Obtain and interpret

A variable is normally distributed with mean 68 and standard deviation 10.
a. Determine and interpret the quartiles of the variable.
b. Obtain and interpret the 99th percentile.
c. Find the value that 85% of all possible values of the variable exceed.
d. Find the two values that divide the area under the corresponding normal curve into a middle area of 0.90 and two outside areas of 0.05. Interpret your answer.

Step by Step Solution

★★★★★

3.45 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Using Table II we find that an area of 02500 lies to left of z 067 an area of 5000 lies to the lef... 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)

503-M-S-D-D (284).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

A variable is normally distributed with mean 10 and standard deviation 3. a. Determine and interpret the quartiles of the variable. b. Obtain and interpret the seventh decile. c. Find the value that...

A variable is normally distributed with mean 0 and standard deviation 4. a. Determine and interpret the quartiles of the variable. b. Obtain and interpret the second decile. c. Find the value that...

A random variable is normally distributed with mean = $1500 and standard deviation = $100. Determine the standard error of the sampling distribution of the mean for simple random samples with the...

A variable is normally distributed with mean 6 and standard deviation 2. a. Determine and interpret the quartiles of the variable. b. Obtain and interpret the 85th percentile. c. Find the value that...

q-1 The probability is 0.314 that the gestation period of a woman will exceed 9 months. In six human births, what is the probability that the number in which the gestation period exceeds 9 months is...

1a. The probability is 0.314 that the gestation period of a woman will exceed 9 months. In six human births, what is the probability that the number in which the gestation period exceeds 9 months is...

A variable is normally distributed with mean 68 and standard deviation 10. Find the percentage of all possible values of the variable that a. Lie between 73 and 80. b. Are at least 75. c. Are at most...

Graph the trigonometric function. 1 COSX Plot all points corresponding to x-intercepts, minima, and maxima within one cycle. Then click on the graph-a-function button. X

My Lab Chapter 6 The Normal Distribution HW 12 Find the area of the shaded region for each standard normal curve. a. -1.15. 1.15 z A normal curve centered at 0 is over a horizontal axis labeled z...

Assume that the variable under consideration has a density curve. The area under the density curve that lies to the right of 10 is 0.427. a. What percentage of all possible observations of the...

How much would the 40-year-old investor have to save each year to accumulate the same amount at 65 as the 20-year-old investor?

A real estate development sells houses with a covenant that prohibits the sale to buyers under the age 55 so as to discourage children from living in the area. The covenant may even prohibit children...

The AS network is characterized by: 2 0 0 0 nodes Giant Secure Connected Component Grand Secure Connected Component Very high level of percolation Giant Strongly Connected Component

What was the role of hedge funds in the global financial crisis of 20072009?

Mandate Perceptions. L. Grossback et al. examined mandate perceptions and their causes in the paper Comparing Competing Theories on the Causes of Mandate Perceptions (American Journal of Political...

Wing Stroke Frequency. T. Casey et al. investigated wing stroke frequencies among two species of Euglossine bees, Friese and Cockerell, in the paper Flight Energetics of Euglossine Bees in Relation...

Suppose that you want to perform a hypothesis test based on independent random samples to compare the means of two populations. You know that the two distributions of the variable under consideration...

Dani Corporation has 8 million shares of common stock outstanding. The current share price is $80, and the book value per share is $8. The company also has two bond issues outstanding. The first bond...

https://education.wiley.com/content/Black_Business_Statistics_10e/media/simulations/bloomberg_videos/black10e_ch12_bloomberg_video.html watch the videoand answer the question below. If the co-founder...

Statement of Advice 3 - Calculate the franking account and tax payable by Haufmann Pty Ltd. Jerry Haufmann is a director of Haufmann Pty Ltd, an Australian resident private company, with a corporate...