Stats Help for College-level Students

Working with normal distribution and probability

The average hourly wage of workers in a fast food restaurant is $5.85 with a standard deviation of $0.35. Assume that the distribution is normal. If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than $6.25 an hour?

Normal Distribution

In a production run of 40 of a particular model of radiation detector, there are four which have defective circuits. If a sample of three of these is chosen without replacement, what is the probability that all three will be defective?

Normal distribution and percentiles

True or false: It is not possible for the score in a distribution, not necessarily normal, which ranks as the 90th percentile to also be the mode for the distribution.

Statistics: Multiple Choice Questions

Multiple choice statistics questions on Chebyshev's theorem, standard deviation, coefficient of variation, relative dispersion, Pearson's coefficient of skewness, and sample variance. See attached file for full problem description.

Determining the least squares trend equation

Listed is the selling price for a share of PepsiCo, Inc. at the close of the year A. Plot the data B. Determine the least squares trend equation C. Calculate the points for years 1993 and 1998 See attachment below for time series table.

Mean, median, mode, range, standard deviation and probability

Mean, median, mode, range, standard deviation and probability. Please see the attached file.

Working with probability given a specific situation

Do you try to pad your insurance claim to cover your deductible? About 40% of all U.S. adults will try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 128 insurance claims to be processed in the next few days. What is the probability that a. ha ...continues

Linear Programming

The Dub-Dub and Dub Company produces and markets three lines of WEB page designs: A, B, and C; A is a standard WEB page design and B and C are professional WEB page designs. The manufacturing process for the WEB page designs is such that two development operations are required - all WEB page designs pass through both operations ...continues

Hypothesis testing

Please see the attachment below.

Average, Standard Deviation, Confidence Interval, Test of Hypothesis

A vendor supplies refreshments at a baseball stadium and must plan for the possibility of a World Series contest. In the accompanying table, x represents the number of games required to complete a World Series contest. P(x) is the probability that x games are required to complete the contest. x P(x) 4 ...continues