chapter 7, Basic Statistics

A study of long term phone calls made from general electricss corporate headquarters in fairfeild, conneticuit, revealed the length of the calls, in minutes follows the normal probability distribution. the mean length of time per call was 4.2 minutes and the standard deviation was .60 minutes.
a. what fraction of calls last between 4.2 and 5 minutes
B. what fraction of 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 4% of calls what is the time

The funds dispersed at the atm machine located near the checkout line at the krogers in union kentucky follows normal probability distribution with a mean of 4200 per day and a standard deviation of 720 per day. The machine is programmed to notify the nearby bank if the amount is very low( less than 2500) or very high( more than 6000)
A. what percent of the days will the bank be notified because the amount dispensed is very low
B. what is the percent of time will the bank be notified because the amount dispensed is to high
C. what perfcent of the time will the bank not be notified regarding the amount dispersed

The price of shares of bank of florida at the end of trading each day for the last year followed the normal distribution. Assume there were 240 trading days in the year. The mean price was 42.00 per share and the standard deviation was 2.25 per share
A. what percent of the days was the price over 45.00, How many days would you estimate
B. What percent of days was the price between 38 and 40
C. what was the stock price on the highest 15% days

Posted Date: 3/3/2013 2:53:34 PM | Location : United States

Related Discussions:- chapter 7, Assignment Help, Ask Question on chapter 7, Get Answer, Expert's Help, chapter 7 Discussions

Write discussion on chapter 7
Your posts are moderated
Related Questions
In November and December 2010, Lane Co., a newly organized magazine publisher, received $90,000 for 1,000 three-year subscriptions at $30 per year, starting with the January 2011 i

Is the z-square the same as the z-test? what is it used for and how is it different from t-square?

Q. What is Sample Population? Choosing a sample population is one of the most important factors in gathering statistical data because all of the claims will be based on the sam

5. Perform a factorial MANOVA on the data. Before interpreting the multivariate results of the MANOVA, check outcomes that test other assumptions for this statistic: equality of co

Accounting for inflation Inflation sales is a term reporting a range of sales systems designed to correct problems that comes from traditional cost sales in the use of inflation. I

Mean The mean is commonly the most significant of all the numerical measurements used to describe data, and it is what the most people call an average. Example  Find

Allowance for uncollectible A contra-asset assessment consideration used to indicate the part of a / r that is approximated to be uncollectible.

Unfortunately the 10 questions are timed and when I send them to you, I MUST have back in 3-1/2 to 4 hours. Can you help?

What is the probability of selecting exactly one red and one blue fish (Total red is .479 and total blue is .521 and total of both is 1.000) I cannot figure out the formula or how