Question: 1. Suppose that X is normally distributed with a mean of 60 and a standard deviation of 9. What is P( X 72.15)? 2. At

1. Suppose that X is normally distributed with a mean of 60 and a standard deviation of 9. What is P(X 72.15)?

2. At a college the scores on the chemistry final exam are approximately normally distributed, with a mean of 79 and a standard deviation of 15. The scores on the calculus final are also approximately normally distributed, with a mean of 79 and a standard deviation of 12. A student scored 80 on the chemistry final and 82 on the calculus final. Relative to the students in each respective class, in which subject did the student do better?

3. Find a value of c so that P(Z c) = 0.75.

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!

Extract B (lines 20-21) states that 'all vehicle owners should be forced to pay the full costs of their driving. This would incentivise people to consider using public transport, cycling or walking....

PLS HELP I NEED ANSWERS WITHIN NEXT HOUR!!! Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes from (0.7, 1)...

Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.4, 1). The second goes from (0.4, 1) to (0.8, 2) in the xy-plane. What percent of...

Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.1, 1). The second goes from (0.1, 1) to (0.7, 2) in the xy-plane. What percent of...

The length of time needed to complete a certain test is normally distributed with mean 74 minutes and standard deviation 12 minutes. Find the probability that it will take less than 88 minutes to...

Suppose that X is normally distributed with a mean of 60 and a standard deviation of 3. What is P(X 64.05)? a) 0.089 b) 0.092 c) 0.091 d) 0.411 e) 0.911 f) None of the above Question 10 Suppose that...

Suppose that x is normally distributed with a mean of 20 and a standard deviation of 6. What is P(13.82 x 29.18)? a) 0.351 b) 0.437 c) 0.785 d) 0.440 e) 0.348 f) None of the above Question 2 Find a...

Suppose that x is normally distributed with a mean of 40 and a standard deviation of 2. What is P( x 44.90)? Suppose that X is normally distributed with a mean of 20 and a standard deviation of 18....

NEED IN 45 MINUTES Suppose that x is normally distributed with a mean of 20 and a standard deviation of 3. What is P(16.91 x 24.59)? a) 0.348 b) 0.438 c) 0.353 d) 0.437 e) 0.785 f) None of the above...

IJUST NEED THE ANSWERS ASAP Suppose that x is normally distributed with a mean of 30 and a standard deviation of 3. What is P(27.42 x 34.08)? a) 0.718 b) 0.413 c) 0.309 d) 0.305 e) 0.415 f) None of...

Z- score multiple choice practice questions The probability that a titanoboa is 120 feet long or longer is 0.0062 while the probability that it is less than 86 feet long is 0.0401. The mean length...

A delivery company is implementing a system to compare the costs of purchasing and operating different vehicles in its fleet. Truck 415 is driven 125,000 miles per year at a variable cost of $0.13...

A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track with a radius of 31.5 m. If the magnitude of the force that maintains the bikes circular motion is 373 N, what is the...

Rence invested $ 2 , 0 0 0 six years apo at 4 . 5 percent interest. She spends all of her interest eamings impedately so the only receives interest on her inital $ 2 , 0 0 0 investment. Which lype of...

2023 1040 form 1.Phillip and Claire are married and file a joint return. Phillip is self-employed as a real estate agent, and Claire is a flight attendant. Phillip and Claire have three dependent...