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A student scored 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8. Did the student do better on the chemistry test or the history test.
If the least squares equation for sales data going from 1984 to 1990 is Y1 = 10 + 1.3X (in $ millions) found using the coded method, what is the plot on the straight line for 1988? (x and y values)
consider two independent random variables xsub1 and xsub2 having same cauchy distributionfx1pi1x2 from negative
if the test statistic for a difference of means test has a p-value of .03 we could reject the null hypothesis at an
the grocery manufacturers of america reported that 76 of consumers read the ingredients listed on a products label.
Within what values will 95.44 percent of sample means of this process fall, if samples of n = 14 are taken and the process is in control (random)?
The Motion Picture Associa- tion of America studies the ethnicity of moviegoers to understand changes in the demographics of moviegoers over time. Here are the numbers of moviegoers (in millions) classified as to whether they were Hispanic, Africa..
Develop the 5-Step Hypothesis Test for a particular claim related to your work or life environment. (This should be a test of one-sample mean or one-sample proportion.
Consider a system consisting of four components, as pictured in the diagram shown below. Components 1 and 2 form a series subsystem, as do Components 3 and 4. The two subsystems are connected in parallel.
If we select a crew member at random, what is the probability the crew member earns:
1. you manage a loan portfolio at a local bank. one day you are approached by a jim riskind who is seeking an unsecured
The accounting association has 15 members, 10 of which are CPAs. The members are to be selected to study ways to increase membership. What is the probability of all three selected are CPAs?
A hypothetical statistics author is obsessed with making 10-foot putts. Each day that he practices, he putts 60 times and counts the number he makes.
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