Following normal probability distribution

Assignment Help Basic Statistics

Reference no: EM1317173

A study group of long distance phone calls made from the corporate offices of Pepsi Bottling Group, Inc., in Somers, New York, revealed the length of the calls, in minutes, follows normal probability distribution. The mean length of time per call was 4.2 minutes and the standard deviation was 0.60 minutes.

a. What fraction of the calls last between 4.2 and 5 minutes?

b. What fraction of the calls last more than 5 minutes?

c. What fraction of the calls last between 5 and 6 minutes?

d. What fraction of the calls last between 4 and 6 minutes?

e. As part of her report to the president, the director of communications would like to report the length of the longest (in duration) 4 percent of calls. What is this time?

Reference no: EM1317173

Questions Cloud

Determine theoretical and percent yields for this experiment : By Solving this problem student is able to understand how to calculate theoretical and percent yields in an experiment - determine theoretical and percent yields for this experiment.

Expected returns on assets and certainty equivalent : What is the expected return of this asset? What is Esperanza's expected utility? What is her certainty equivalent? Suppose that Esperanza can purchase insurance that guarantees her a return of $4900 regardless of the return on the asset.

Relative proportions of the three samples : Enter relative proportions of the 3 samples in order (20,50,30) in "Expected values" area.

How many grams of water should be produced : How many grams of water should be produced and What is the theoretical yield of nitrogen?

Following normal probability distribution : A study group of long distance phone calls made from the corporate offices of Pepsi Bottling Group, Inc., in Somers, New York, revealed the length of the calls, in minutes, follows normal probability distribution.

What mass of product may be produced : Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?

Prepare a cash-flow budget and a profit budget : Prepare a cash-flow budget and a profit budget for Gringotts Ltd on the basis of Strategy 1. The budgets should be split into quarterly intervals showing cash-flow and profit forecasts for each individual quarter.

Explaining cumulative relative frequency distribution : Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.

Chemical reaction and to balance the given equation : Solving this question helps the student to understand what is happening in a chemical reaction and to balance the given equation.

User Account

All Pages