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Have a large SRS (Simple random sampling), you can estimate the sampling distribution of y mean (y with a - on top) by repeatedly taking samples of size n with replacement from the list of sample values.
Now, they want me to take 1000 samples with a replacement of size 100 and draw a histogram of the 1000 sample means.
The time to complete a construction project is normally distributed with a mean of 60 weeks and a standard deviation of 4 weeks. What is the probability the project will take longer than 65 weeks?
The following data provided by a coffee company are the roast time in minutes for five batches of coffee (x) and the resulting shrinkage in percent of the coffee weight(y).
Can and how would you apply basic probability concepts to facilitate business decision making? Critically discuss the difference between discrete and continuous probability distributions?
Ski Resorts of Vermont, Inc. is considering a merger with Gulf Shores, Inc. of Alabama. The board of directors surveyed 50 stockholders concerning their position on the merger.
Suppose the time necessary to process an application for a license plate for a newly purchased vehicle is normally distributed with mean of 6 minutes and standard deviation of 1.5 minutes.
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
According to Fortune, Missouri is within 500 miles of 44% of all U.S. manufacturing plants 8. If a Missouri company needs parts manufactured in 122 different plants, what is the probability that at least half of them can be found within 500 miles ..
A manufacturer claims that the mean lifetime, , of its light bulbs is 49 months. The standard deviation of these lifetimes is 9 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 46 months.
Use alpha level. 05 to compute and interpret Pearson's r and to test whether it is important (using all your steps for hypothesis test).
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
Please use the five-step process for hypothesis testing. The Connecticut Board of Education is concerned that first year female high school teachers are receiving lower salaries than their male counterparts.
At a large commercial bakery, one of the measures used to evaluate employees is number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and the broken co..
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