Question: Let the random variable X follow a normal distribution with =70 and 2=49. a. Find the probability that X is greater than 70. b. Find

Let the random variable X follow a normal distribution with =70 and 2=49.

a.

Find the probability that X is greater than 70.

b.

Find the probability that X is greater than 50 and less than 75.

c.

Find the probability that X is less than 65.

d.

The probability is 0.3 that X is greater than whatnumber?

e.

The probability is 0.07 that X is in the symmetric interval about the mean between which twonumbers?

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 Economics Questions!

Q:

Let the random variable X follow a normal distribution with =50 and 2=49. a. Find the probability that X is greater than 60 . b. Find the probability that X is greater than 35 and less than 61 . c....

Q:

Let the random variable X follow a normal distribution with =70 and 2=64. a. Find the probability that X is greater than 80 . b. Find the probability that X is greater than 60 and less than 84 . c....

Q:

Let the random variable X follow a normal distribution with = 30 and 2 = 81. a. Find the probability that X is greater than 40. b. Find the probability that X is greater than 15 and less than 43....

Q:

Let the random variable X follow a normal distribution with = 80 and 2 = 100. a. Find the probability that X is greater than 60. b. Find the probability that X is greater than 72 and less than 82....

Q:

Let the random variable X follow a normal distribution with = 0.2 and 2 = 0.0025. a. Find the probability that X is greater than 0.4. b. Find the probability that X is greater than 0.15 and less...

Q:

Let the random variable X follow a normal distribution with = 50 and 2 = 64: Find a symmetric interval about the mean for which the probability of X being in this interval is 0.95. SOLUTION This...

Q:

3. In a survey of top executives, it was found that 46% had either traveled internationally on business or could fluently speak a foreign language. The probability that an executive who had not...

Q:

normal distrubition 1. Let the random variable x follow a normal distribution with p = 50 and 0'2 = 64. a. Find the probability that X is greater than 60. b. Find the probability that X is greater...

Q:

Let the random variable x follow a normal distribution with = 6 0 and 2 = 8 1 . a . Find the probability that x is greater than 7 0 . b . Find the probability that x is greater than 4 5 and less than...

Q:

Ty-pe answer needed. solve it correctly and correctly please. NO HANDWRITTEN ANSWER. ONLY TY-PED ANSWER Let the random variable X follow a normal distribution with u =60 and o -49. a Find the...

Q:

Majic Corporation sells phone cases to public and private companies the employee 200 full-time employees who work in sales, customer service and office support roles . They have had an annual...

Q:

In the statement of activities of a not-for-profit, depreciation expense should: a. be included as an element of the expense. b. be included as an element of other changes in fund balances. c. be...

Q:

1 3 . MBI has a current price of $ 3 6 , an expected dividend per share of $ 0 . 9 0 , EPS of $ 5 . 5 0 this year, expected EPS growth of 1 0 % per year, and a typical P / E ratio of 1 3 . 5 ....

Q:

On - demand supply chain software that is not installed on a company computer is gaining popularity. An issue to be addressed with this purchase option is:

Q:

11. What types of information collected are most frequently used in decision-making?

Q:

10. How much time does it take between when we collect information until it is used in decision-making?

Q:

2. Ask questions, listen rather than attempt to persuade.