Question: The average grade for an exam is 72, and the standard deviation is 6. If 9% of the class is given A's, and the grades

The average grade for an exam is 72, and the standard deviation is 6. If 9% of the class is given A's, and the grades are curved to follow a normal distribution:

a. Find the fifth decile.

b. What is the lowest possible A?

NOTE: THREE DECIMAL PLACES AND SEND HANDWRITTEN SOLUTIONS. THANK YOU

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!

You have just been hired at ABC Manufacturing, and your supervisor has invited you to sit in on today's budget meeting. You are given a copy of the following proposed budget for next year to review....

Kindly send all answer in handwritten solutions: 1. Flaws occur in the interior of plastic for automobiles according to a Poisson distribution with a mean of 0.03 per panel. a. What is the expected...

The average grade for an exam is 74, and the standard deviation is 7. If 12% of the class is given grades of A, and the grades are curved to follow a normal distribution, what is the lowest possible...

The average grade for an exam is 74, and the standard deviation is 7. Grades are curved to follow a normal distribution and 12% of the class are given A grades. a)What is the lowest possible A and...

1.A group of statistics students took a midterm exam. The class mean was 72 and the standard deviation was 3.2. The instructor decided to "curve" the grades based on their normal distribution. A...

Solve the following problem/s and Show your solution A factory finds that, on average, 10% of the bulb produced by a given machine will be defective for certain specified requirements. If 8 bulbs are...

Solve the following and show your solution 1. Out of 800 families with 5 children each, how many would you expect to have either 2 or 3 boys? Assume equal probabilities for boys and girls. 2. Six...

A professor in a large statistics class has a grading policy such that only the 15% of the students with the highest scores will receive the grade A. The mean score for this class is 72 with a...

answers Chapter 5 Activity Instructions: Show all work when applicable. This can be done online or by hand. Once completed, upload activity to Canvas as a Word or PDF file or take a picture if done...

On a statistics exam at a very large school with a class of 300 students, the professor claims the average score on the test was a 76.2%. A group of students were discussing their exam scores and...

Lucy, a college student at Iowa State University, earns $20 per hour working at a Cafe. Her parents also give her $200 per week to help with her expenses. Lately, her parents have been concerned...

Which will provide a larger monthly payment to a male annuitant age 65: an annuity, five years certain, or an installment-refund annuity? Assume the same amount of money is available for each...

Which of the following is a characteristic of term life insurance policies? A . They have cash values, but the insured cannot borrow against them. B . They do not have cash values, therefore the...

Pairs of pants are being produced by a particular outlet facility. The pants are "checked" by a group of 10 workers. The workers inspect pairs of pants taken randomly from the production line. Each...

Sales Forecast Why do you think most long-term financial planning begins with sales forecasts? Put differently, why are future sales, the key input?

A small sphere of reference-grade iron with a specific heat of 447 J/kg 0 K and a mass of 0.515 kg is suddenly immersed in a water-ice mixture. Fine thermocouple wires suspend the sphere, and the...

Randy Duck out has been asked to develop an estimate of the per-unit selling price (the price that each unit will be sold for) of a new line of hand-crafted booklets that offer excuses for missed...

Metro Shuttle Company is considering investing in two new vans that are expected to generate combined cash inflows of $28,000 per year. The vans combined purchase price is $91,000. The expected life...

Explain Call by Value and Call by Reference with appropriate example

4. What specific changes in the environment have taken place in relation to the information we have collected?

2. The purpose of the acquisition of the information.

1. What is the meaning of the information we are collecting?