Question: x is a normally distributed random variable with mean 21 and standard deviation 12 . What is the probability that x is between 9 and

x is a normally distributed random variable with mean 21 and standard deviation 12 . What is the probability that x is between 9 and 33 ? 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 Finance Questions!

Let x be a normally distributed random variable with mean 16 and standard deviation 14 Please express your answer as a number between 0 and 100 . If you want to write 52%, please enter 52. What is...

If the random variable Z has a standard normal distribution, ZNormal(0,1), then P(Z

X is a normally distributed random variable with mean 46 and standard deviation 12 What is the probability that X is between 21 and 71 Write your answer as a decimal rounded to the nearest thousandth

Let X be a normally distributed random variable with mean = 2 and standard deviation = 3.2. You will need to use a Z-score table or your calculator for this problem. (a) What is the probability that...

5.30 5.31 5.32 5.33 5.34 Suppose the random variable x is best described by a nor mal distribution with p. = 25 and 0' = 5. Find the z-score that corresponds to each of the following x values: a. x =...

The math quiz scores show that =75 and =10. What quiz score is three standard deviations below the mean? Question 1 options: A) 45 B) 65 C) 55 D) 85 Suppose X ~ N (10, 6). This says that x is a...

QUESTION 5 Suppose that twelve percent of borrowers of payday loans default on their payments. A random sample of seven borrowers is selected. (Hint: use the binomial distribution for this question,...

Suppose that X is a normally distributed random variable, with mean 10 and standard deviation 2. What is the probability that X takes a value between 7.5 and 10.8? O 0.6554 O 0.3446 O 0.3262 O 0.5498...

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...

Quiz : Final Review of statistics x is a normally distributed random variable with mean 71 and standard deviation 11. What is the probability that x is between 60 and 93 ? Use the 0.68-0.95-0.997...

Required a. Calculate the net present value of the proposed investment in product P. (10 Marks) b. Advise on the acceptability of the proposed investment in product P and discuss the limitations of...

Suppose the opening in the tank of Fig. 10-54 is

A portfolio that offers the lowest risk for a given level of return is known as an efficient portfolio. Question 1 options: TrueFalse

On 1 March 2007 DB Limited issued R560 000 15% debentures at R98. The debentures were to be redeemed at par in four equal annual payments starting 28 February 2010. Required: Journalise the above...