Minimum and maximum scores required for each of grades

Assignment Help Basic Statistics
Reference no: EM13137606

A 20-point midterm test results in grades which are normally distributed with a mean of 13 and standard deviation of 3. The professor would like 15% of the class to get A's, 30% to bet B's, 30% to get C's, 15% to get D's and 10% F's. What would be the minimum and maximum scores required for each of these grades?

Reference no: EM13137606

Questions Cloud

Conclusion-chebychev-s theorem about percentage of adults : What can you conclude from chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches? Show all work.
What is the percent yield of a reaction : What is the percent yield of a reaction in which 111.6 g phosphorus trichloride reacts with excess water to form 60.8 g HCl and aqueous phosphorous acid (H3PO3)?
How might the nature of the business affect your decision : Imagine you are preparing a business s cash budget, which involves determining the amount of cash to keep on hand. How might the nature of the business affect your decision?
Deducting tax return : Doug pays a county personal property tax on his automobile of $1,500. The $1,500 includes $800 based on the weight of the car and $700 based on the value of the car. How much of the tax can Doug deduct on his tax return?
Minimum and maximum scores required for each of grades : The class to get A's, 30% to bet B's, 30% to get C's, 15% to get D's and 10% F's. What would be the minimum and maximum scores required for each of these grades?
What is the price of stock for 2012 : In 2011 a company report earning per share of $10.00 when its stock was selling for $220. In 2012, its earning increased by 14%. If all the relationship remains constant, what is the price of stock for 2012?
Calculate the final volume of the balloon : A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
Determine the final velocity : Determine the Final Velocity, An object whose mass is 1 lb has a velocity of 100 ft/s. How would I determine the final velocity, in ft/s, if the kinetic energy of the object decreases
What is amount of write-down required using us gaap : What is the amount of write-down (if any) required using US GAAP? Calculate the write-down on both an individual and a total inventory basis.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Exponentially smoothed forecast

The manager fo the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. Compute the two forecast by using MAPD and indicate which seems to be..

  Population mean for minutes of exercise

Assume that we know from previous studies that the population mean for minutes of exercise per week for college students is Uu= 100 with a standard deviation =25

  Confidence interval-sample size determination

Families USA, a monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $10,979.

  Determine whether null hypothes be rejected or not

She chose the sample of 25 women who were recently married for first time and found average age was 23.5 years. Standard deviation was 3 years. Must null hypothesis be rejected?

  Inferences involving means

Your supervisor has asked you to conduct a survey about consumers' buying habits. For this task, you surveyed 100 men and 100 women at a local shopping mall.

  What is the bonferroni adjustment

What is the Bonferroni adjustment? What would the Bonferroni adjustment be for a study with four groups for which a researcher decided to use t-tests?

  Determining sample mean using standard deviation

For a sample with standard deviation of 10, a score of X = 44 corresponds to z-score of 0.50.  Based on this info, determine the sample mean?

  How much money do these people make each year

Explain how much money do these people make each year. Suppose you read in your local newspaper that 45 officials in student services whioch is earned as an average.

  Multiple regression models using excel

Managers at Beta Technologies, Inc., have collected current annual salary figures and potentially related data for a random sample of 52 of the company's full-time employees.

  Find better relative to class using standard deviation

Class where the mean is 85 and the standard deviation is 4.59, who did better relative to their class? Note both did better than the class mean. How do you answer this question?

  Knowledge about statistics-confidence interval

This exercise is a "what if analysis" designed to determine what happens to the test statistics and interval estimates when elements of the statistical inference change.

  Statistical correlation versus causation

Describe a different example of where the independent variable, while highly correlated to the dependent variable, does not cause the dependent variable to change directly.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd