Question: X is a normally distributed random variable with mean 55 and standard deviation 17. What is the probability that X is between 21 and 89?

X is a normally distributed random variable with mean 55 and standard deviation 17.

What is the probability that X is between 21 and 89?

Use the 0.68-0.95-0.997 rule and write your answer as a decimal. Round to the nearest thousandth if necessary.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

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

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

If X is a normally distributed random variable with mean -61 and standard deviation 22, find the value such that the probability that the random variable will be above it is 0.25.

Q:

1. Medical doctors are looking at the heights of eleven year olds. They determine, for 9 eleven year olds, a confidence interval for mean height to be (122, 147) cm. Determine the level of confidence...

Q:

The time, in hours, that a copying machine may work without breaking down is a normally distributed random variable with mean 549 and standard deviation 68. Find the probability that the machine will...

Q:

On 1 June 2019, Manchester United Ltd bought 48 million ordinary shares in Chelsea FC Ltd paying GHS 280 million cash. The summarised statement of financial position for the two entities as at 31...

Q:

Use the three- step process described on p. 435 to decide if the following observations represent a process that is incontrol. 12 4 2 1 2 2 2 1 2 3 4 5 6 7 8 9 10 Observation No. of errors 2

Q:

Which of the following issues cannot be resolved by recursion? A. Factorial of a number B. Finding of a prime number C. Problems without base case D. Finding of sum of digits in any number

Q:

4. Obey all school rules. This reminds students that all school rules apply in your classroom. Then students cannot claim, for example, that they thought it was okay to chew gum or listen to music on...

Q:

The following sample observations were randomly selected. a. Determine the regression equation. b. Determine the value of y when x is7. x. y 13 15 7 12 13 11 9 5

Q:

Current Attempt in Progress Your answer is partially correct. Tammy Peters' regular hourly wage rate is $40, and she receives an hourly rate of $60 for work in excess of 40 hours. During a March pay...

Q:

Superior Manufacturing has the following amounts listed before reconciling the overhead variance. Estimated overhead$35,000 Applied overhead30,000 Actual overhead32,000 Cost of goods sold75,000...

Q:

1. Assume the demand function for good Y is as follows: D = 850 + 21+ 15Px 1315 where QD 2 Quantity demanded of good Y, I = Average income, PK 2 Price of good X and PY 2 Price of good Y. (a)...

Q:

During the 2023 income year, Nilpa (a resident taxpayer) received the following: Net salary from employer (PAYG of $30,000 was withheld) $90,000 Allowance from employer $10,000 Cash prize from...

Q:

510. Definitions for a multicomponent flash are as follows: x, yi liquid and vapor mole fractions, respectively = feed mole fraction Zj K =y/x-equilibrium constant L,V, F liquid, vapor, and feed...

Q:

Suppose the Ashland Shakespeare Festival is hiring a new music director. The group gives all applicants for the position three tests: (1) a work-sample test, in which each applicant is asked to score...

Q:

student question Everyone knows how high the cost of prescription medicines is these days, and many Americans dislike having to pay significantly more than Canadians or Europeans do for the very same...

Q:

(a) Highlight the differences between colonial banking and modern international banking. (10 marks) (b) Elaborate the steps and important features of a standard Letter of Credit Agreement. (10 marks)

Q:

For each of the following reactions, express the equilibrium constant: a) H20 (I) H2 (g) + 02 (g) Ke = 1.0x107 b) Fe2 (g) 2F (g) Ke= 4.9 x 10-21 c) C (s) + O2 (g) d) H2 (g) + C2H4 (g) C2H6 (g) Ke =...

Q:

14.7 The article The Influence of Temperature and Sunshine on the Alpha-Acid Contents of Hops (Agricultural Meteorology [1974]: 375382) used a multiple regression model to relate y 5 yield of hops...

Q:

CR13.13 The report Undergraduate Students and Credit Cards in 2004 (Nellie Mae, May 2005) included information collected from individuals in a random sample of undergraduate students in the United...

Q:

6. Carry out the model utility test (H0: b 5 0). Explain why the conclusion from this test is consistent with your explanation in Step 4.