Recent Homework Questions About Statistics
I have just a couple questions I have trouble understanding... can someone please help me? The data below indicate the rankings of a set of employees according to class theory and on-the-job practice evaluations: Theory 1 7 2 10 4 8 5 3 6 9 Practice 2 8 1 7 3 9 6 5 4 10 What ...
Wednesday, December 4, 2013 at 2:22pm
Your program plans to acquire a total of 600 end items costing $535 million over a five-year period. The first production contract is to be awarded in FY04. The number of items to be procured (not delivered) each year and their estimated cost (in then-year dollars) is shown ...
Tuesday, December 3, 2013 at 10:03pm
What is your question? If you want to know Kelsey's score: Z = (score-mean)/SD -1.85 = (score-72)/4
Tuesday, December 3, 2013 at 4:23am
(100*10)/(7*60) = ?
Tuesday, December 3, 2013 at 4:05am
You might want to round it to the nearest person. It rounds to 17, but if you want all the records to be covered, you might round it up to 18. This would give the FTEs a little slack.
Monday, December 2, 2013 at 7:41am
Monday, December 2, 2013 at 5:32am
1. D Chi Square distributions are positively skewed (skewed to the right). As the degrees of freedom increases, the Chi Square distribution will approach a normal symmetrical distribution. Smaller degrees of freedom will skew more to the right. 2. A Ho: The variables are ...
Sunday, December 1, 2013 at 8:14pm
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * 12/51 * 11/50 * 10/49 * (13*3)/48 = ?
Sunday, December 1, 2013 at 4:26pm
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. A
Sunday, December 1, 2013 at 2:05pm
There are different ways you can do this kind of problem, but the formula below might be one of the easier ways: s/[1 + (1.645/√2n)] ..to.. s/[1 - (1.645/√2n)] ...where s = standard deviation, 1.645 represents the 90% confidence interval using a z-table, and n = ...
Saturday, November 30, 2013 at 7:44pm
whether it is one-tailed or two tailed? and if one tailed...I do agree with you now that this is the left tail test. However I am not sure how to handle negative value on t. Here is what I did. I used formula for hypothesis test with mu unknow, t=(xbar-mu)/(sd/sqr n)=(26-25.02...
Saturday, November 30, 2013 at 12:27pm
mn counting rule
Friday, July 12, 2013 at 9:31am
Saturday, September 3, 2011 at 12:57am
Mean=9 Variance=792 Standard Deviation=28.14
Monday, May 16, 2011 at 5:20pm
A vending machine is designed to dispense a mean of 7.6 oz. of coffee into an 8-oz cup. If the standard deviation of the amount of coffee dispensed is 0.4 oz. and the amount is normally distributed, find the percent of times that the machine will: a.) Dispense from 7.4 oz. to ...
Monday, September 24, 2007 at 8:32pm