Question: 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

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 90.

Step by Step Solution

★★★★★

3.40 Rating (172 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a For the variable values 73 and 80 the zvalues are z 73 68 10 050 and z 8... 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 (279).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. Find the percentage of all possible values of the variable that a. Lie between 6 and 7 b. Are at least 10 c. Are at most 17.5

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 random variable X is normally distributed with mean . With a probability of1, the equation y2 +2y+X <0 where y is known to have a single real root. What is the value of ?

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 10 and standard deviation 2.a. Find the percentage of all possible values of the variable that lie between 9 and 14.b. Find the percentage of all possible...

Please solve this. 6.- A recent report indicates that about 1 in every 200 Americans are in prison. Use this information and the Poisson distribution to determine the approximate probability that at...

6.92 c. are at most 17.5. 6.92 A variable is normally distributed with mean O and standard deviation 4. Find the percentage of all possible values of the variable that a. lie between -8 and 8. b....

6.89 6.89 A variable is normally distributed with mean 6 and standard deviation 2. Find the percentage of all possible values of the variable that a. lie between 1 and 7. b. exceed 5. c. are less...

A variable is normally distributed with mean 15 and standard deviation 4. Find the percentage of all possible values of the variable that a. lie between 9 and 12. b. are at least 16. c. are at most...

L = 80 mm d = 30 mm = Q rad = 2pi/360 = 0.017 00 T G degree (rad) (N.m) | (N/m?) (rad) | (GN/m?) 3.5 130

Which of the following is true about the traditional income statement? O Approach shows the gross margin amount. O Are prepared primarily for internal reporting. O Approach classifies costs into...

2. Cost-plus pricing: a. Leads to profit maximization. b. Is inherently circular for manufacturing firms. c. Is difficult to perform. d. None of the above are correct.

Describe and contrast the investing strategies of hedge funds and mutual funds.

Self-Reported Weight. The article Accuracy of SelfReported Height and Weight in a Community-Based Sample of Older African Americans and Whites (Journal of Gerontology Series A: Biological Sciences...

TV Viewing. The A. C. Nielsen Company collects data on the TV viewing habits of Americans and publishes the information in Nielsen Report on Television. Suppose that you want to use a paired sample...

The Distribution of M. In this exercise, you are to obtain the distribution of the variable M when the sample sizes are both 3. Doing so enables you to see how the MannWhitney table is constructed....

months and will partially disrupt production. The firm has just completed a $50,000 feasibility study to analyze the decision to buy the XC-750, resulting in the following estimates: to be 74% of...

Security F has an expected return of 10.50 percent and a standard deviation of 43.50 percent per year. Security G has an expected return of 15.50 percent and a standard deviation of 62.50 percent per...

Greater risk reduction can be achieved when security returns are A . high B . negatively correlated C . positively correlated D . uncorrelated