Question: The test results for a class with 28 students are normally distributed with a mean of 75 and a standard deviation of 8.5. What is

The test results for a class with 28 students are normally distributed with a mean of 75 and a standard deviation of 8.5. What is the probability that a randomly chosen student earned a B or higher on the test (score of 80 or higher)?

0.9587

0.7173

0.7218

0.6349

0.3651

0.2782

0.2827

0.0413

0.0024

None of the other answers is correct.

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!

Case Study #2 Prairie Natural Body Care Co. Located in the beautiful Rocky Mountains of Alberta, Prairie Natural Body Care Co. (PNBC) embraces the philosophy of environmental sustainability. The...

answer this questions 1) Find Maximum likelihood estimate of Poisson distribution. 2) Suppose the weights of randomly selected American female college students are normally distributed with unknown...

Question 1 2pts A consumer analyst reports that the mean life of a certain type of alkaline battery is no more than 63 months. Write the null and alternative hypotheses and note which is the claim....

I DO NOT NEED STEP BY STEP EXPLANATIONS, JUST THE ANSWERS Question 11 2pts A computer manufacturer estimates that its cheapest screens will last less than 2.8 years. A random sample of 61 of these...

Question 1 2pts A consumer analyst reports that the mean life of a certain type of alkaline battery is more than 36 months. Write the null and alternative hypotheses and note which is the claim....

f Facebook x *Course Hero X Quiz: Exam 1 X G inferential statistics - Google Seal X T 2022 Average College Graduate S X + V X C A csufullerton.instructure.com/courses/3334676/quizzes/8259821/take O...

BUSINESS STATISTICS Under faculty business and accountancy subject business statistics Problem Description: Cardiovascular diseases (CVDs) are the number 1 cause of death globally, taking an...

1.Problem 1 is adapted from Problem 29 at the end of Chapter 11. Please use Excel to solve this problem and submit your Excel file. The problem is as follows: A warehouse distributor of carpet faces...

1. For the Gender and Ethnicity variable a.Use Excel to generate the PivotTable showing the number of individuals in each combination of Gender and Ethnicity.Copy this into your assignment....

ABB Communications is considering replacing equipment that had a fi rst cost of $300,000 five years ago. The company CEO wants to know if the equipment should be replaced now or at any other time...

Selected accounts froim the accounting records of Drake Imports at June 30, 2020, are shown in the popup. Drake Imports uses the perlodic inventory system. O (Click the icon to view the accounts.)...

Evaluate. ( Assume x > 0 . ) Check by differentiating. 1 4 x 2 l n x d x 1 4 x 2 l n x d x =

HOW IS THE RESTATED NUMBER FOR LONG TERM LIABILITES ($1,092,636) CALCULATED? With the following accounts included in Brown Inc.s financial statements and assumptions, restate the companys statement...

WHAT DOES THE 5.5 TIMES REFER TO IN THE QUESTION BELOW AND HOW ARE THE RESTATED nUMBERS FOR lONG TERM lIABILITES AND iNVENTORY CALCULATED? With the following accounts included in Brown Inc.s...

A 2.3 g of butter, a fat, is placed in a calorimeter containing 1900 g of water at an initial temperature of 17oC. After combustion of the butter, the water has a temperature of 28 oC. What is the...

How do the trade policies of developed countries affect the ability of less developed countries to benefit from greater participation in the world economy? How do non trade domestic economic policies...

What are the basic static and dynamic arguments for economic integration in less developed countries? Briefly describe the various forms that economic integration can take (e.g., customs union,...

QUESTION FOUR [33] Fulfilment is at the heart of the customer experience and gets to what really matters. It drives loyalty and ensures customers return to the business. In order to grow, it's...

4. Give examples from your everyday life where the process affects the result, but where the result also affects the process.

6. Give examples of circular patterns in a communication situation that you have participated in, where element A affects B, and B affects A.

3. Find examples from your everyday life of people or situations that fit the Ithaca Syndrome.