Question: The grades in a large statistics class have a Normal distribution with mean 61. If 30% of the students in the class had grades below

The grades in a large statistics class have a Normal distribution

The grades in a large statistics class have a Normal distribution with mean 61. If 30% of the students in the class had grades below 57, What percent of students in this class have grades between 57 and 65'? Note: In order to avoid complications, you may assume that no student in this class had a grade exactly equal to 57 or 65

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!

The grades in a large statistics Class have a Normal distribution with mean 64 and variance 121. If a random sample of 4 students were selected from this class, what is the standard deviation of the...

1. Suppose we have two bowls full of candies. Each bowl contains four different flavours of candy - grape (which are purple), lemon (which are yellow), cherry (which are red) and raspberry (which are...

Percentage grades of students who are to take the exam in a large statistics class follow a normal distribution with mean 77.5 and standard deviation 10.5. 9. What proportion of students in the class...

Question 34) Please help me with the steps to solve it and little hints to what they are asking for. The next two questions (36 and 37) refer to the following: Percentage grades in a large geography...

The next two questions (36 and 37) refer to the following: Percentage grades in a large geography class follow a normal distribution with mean 67.5 and standard deviation 12.5. 36. What proportion of...

STATISTICS FOR DECISION MAKING Dr. Azar Abizada HOMEWORK 4 Due Date: Wednesday, March 11th class time Problem 1 (26 points): Be careful, each part of this question is independent of one another. a)...

A firm producing plate glass has developed a less expensive tempering process to allow for fireplaces to rise to a higher temperature without breaking. To test it, five different plates of glass were...

QUESTION 19 If the point estimate is 50 and the margin of error is 4. What is the confidence interval? O A. 12.5 to 24.5 O B. 46 to 54 O C. 44 to 55 O D. 49.6 to 50.4 QUESTION 20 If the sample size...

E| 2 of 9 1D: MST.CPD.ND.04.0030 [1 point] A teacher gives her class a particular examination on mathematics at the end of each year. The results are normally distributed with a mean test score of 57...

PROBABILITY AND STATISTICS EXCEL PROJECT (Spring 2016) There are four problems in this workbook. There is one worksheet (tab) for each problems. Instructions are found at the top of each worksheet....

Give difference between Stateful File Server and Stateless File server.

A particle moves along a straight line with equation of motion s f(t), where s is measured in meters and t in seconds. Find the velocity and speed (in m/s) when t = 4. f(t) = 90t - 7t velocity speed...

The breaking strength X of a certain rivet used in a machine engine has a mean 5000 psi and standard deviation 400 psi. A random sample of 36 rivets is taken. Consider the distribution of X, the...

Draw level-1 DFD (Data Flow Diagram) for Uber taksi reservation It should be in diagram format, upload the screenshot after it is prepared. Unfamiliar experts please don't do it.

5. It is the needs of the individual that are important.

6. It is what the person has previously done for the group that is the deciding factor.

3. It is the commitment you show that is the deciding factor.