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A 150 - 300 word response to the following
Describe when a z-test should be performed as opposed to a t-test? Which (if any) can we use all the time? Why or why not?
A student scores 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.
Make up the ages of a group of participants who are freshman, sophomores, juniors, and seniors. You will need the age of 10 participants across each level.
Determine the greatest acceleration with which the 1-Mg forklift can raise the 750kg crate withour causing the wheels at B to leave the ground. the centers of mass for the forklift and the crate are located ar G1 and G2 respectively.
Statistics is science of conducting studies to: Solve a system of equations.
Determine fraction of employees cost between $1,500 and $2,000 per year?
A test was conducted to find out whether gender of a spokesperson affected the likelihood that consumers would prefer a new product. A survey of consumers at trade show employing a female spokesperson determined that 70 out of 150 customers prefe..
In a high school graduating class of 100 students, 42 studied math, 68 studied psychology, 54 studied history, 22 studied both math and psychology, 7 studied history and neither math nor pyschology, 10 studied all three and 8 did not take any of t..
For such groups of 800, would it be unusual to get 687 consumers who recognize the Dull Computer Company name?
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
A continuous random variable, x, is normally distributed with a mean of $1000 and a standard deviation of $100. Convert each of the following x values into its corresponding z-score.
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
Consider the following age data, which is the result of selecting a random sample of 20 United Airlines pilots.
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