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The meat department of a supermarket sells ground beef in approximate 1 lb packages, but there is some variability. A random sample of 65 packages yielded a mean of 1.05 lbs and a standard deviation of .23 lbs. What is the 95% Confidence Interval for this problem?
in team-teaching two or more teachers lead a class. a researcher tested the use of team-teaching in mathematics
The height in inches of girls on a high school girls basketball team are as follows: Identify the z score used in a quantile plot for the player with a height of 66.5 inches.
an experiment consists of tossing three unfair coins where the probabilty of tossing a head on each is 25. construct
Use α =.01 and test for a significant difference. What is your conclusion?
Run the simulation model for Hammondsport Savings Bank's single ATM machine with the following assumptions: 1. Interarrival time between two customers is a uniform probability distribution
Atlanta Company stock is expected to follow an exponential growth rate. The relationship between the current stock price P0
A sample from a population with μ = 40 and =σ10 has a mean of m = 44. if the sample mean corresponds to a z = 2.00, then how many scores are in the sample?
assume that a set of test scores is normally distributed with a mean of 78 and a standard diviation of 10. what
testing equality of variances.over the last several years the use of cell phones has increased dramatically. according
We wish to determine whether the homicide rate is different in different parts of the country and, if it is different, what is the pattern. We have data on 36 states - 9 each in the four regions Northeast, Midwest, South and West.
What is the expected value and variance of daily revenue (Y) from the machine, if X, the number of cans sold per day has E(X)=125, and Var(X)=50?
In testing the equality of the two means below, what is the test statistic? (Use the unequal variances formula)
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