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Discuss why sampling is essential to many research designs, and why, if done correctly may be more accurate than attempting census measurement.
You have to determine that your cutoff value at level a = 0.05 is 1.645 when testing whether the mean of a population is significantly different from 1.5. If you calculate a test statistic of 1.8 what is the proper conclusion?
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
How does the bell-shaped curve for the sampling distribution of sample means for samples of size n = 100 compare to the bell-shaped curve for sampling distribution of sample means for samples of size n = 60.
Be sure the appropriate assumptions and conditions are satisfied before you proceed.
Utilize a test of the difference among proportions when answering these questions. Illustrate the research hypothesis.
What is the probability that all three students pick exactly the same card?
Estimate the area under the Normal Distribution from the mean to a z-score of -2.07. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
Find out the probbility that exactly five arrive within two days?
Each egg was also measured for volume using a water displacement method. We wanted to know if the two methods agreed or not
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