Find the probability that class has average midterm mark

Assignment Help Basic Statistics

Reference no: EM13144618

a. The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard deviation of 6.

b.What is the probability that a class of 50 has an average midterm mark that is more than 75?

c.What is the mark of the top 10% students?

Reference no: EM13144618

Questions Cloud

The accompanying drawing shows four water molecules : The accompanying drawing shows 4 water molecules interacting with glycine. Four dotted lines are labeled with numbers 1 through 4. As labeled by these numbers, which of the dotted lines could represent hydrogen bonds?

Compare tax consequences to the shareholder : Compare the tax consequences to the shareholder and the distributing corporation of the following three kinds of corporate distributions: ordinary dividends, stock redemptions, and complete liquidations.

How many cubic centimeters will aluminum occupy : aluminum has a density of 2.70g/cm3. how many cubic centimeters will 200.0 grams of aluminum occupy?

Possible explanations for higher earnings per share : Lemon, Inc. has earnings per share of $3.56 for the year 2009. Orange, Inc., its competitor, has earnings per share of $4.78 for the same period. Which of the following are possible explanations for the higher earnings per share of Orange, Inc.?

Find the probability that class has average midterm mark : The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard deviation of 6. What is the probability that a class of 50 has an average midterm mark that is more than 75?

Determine accurate values for the four variables : why would it be difficult to determine accurate values for the four variables in the Lotka-Volterra predator-prey model (a, rprey,m, b) for animals in the real world? Explain your answer.

Components of postretirement benefit expense : The components of postretirement benefit expense are similar to the components of pension expense. How does the service cost component differ between the two expenses?

Journalize entries to record in the partnership accounts : The partners agree that the merchandise inventory is to be priced at $60,000. Journalize entries to record in the partnership accounts (a) Barton’s investment and (b) Fallows’ investment.

Define hydrogen bonds play a role in the properties of dna : Hydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44

User Account

All Pages