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A Discrete random variable can be described as Binomial distribution if is satisfies four conditions, Briefly discuss each of these conditions
Test to see if the mean cell phone bill has changed since 2004. Use a .05 level of significance for the test.
Under what conditions should you use the Chi-Square Test to determine whether there is a difference between proportions of two independent populations?
The slopes of the lines parallel to X axis and Y axis are. The slope of the line parallel to the line y = 10x and passing through origin
What proportion of the scores in a normal distribution are higher than a T-score of 70, what Z-score has 90% of the scores below it and what deviation IQ score ranges would include 90% of the population
One variable recorded is the count X of finish defects (dimples, ripples, etc) in the car's paint. Is it reasonable to use a binomial distribution?
If the company loses contract A, the probability winning contract B decrease to .2. Find the probability of the following events. Winning both contracts
Discuss how the null and alternative hypothesis for one-sample testing differs from two-sample testing; and explain how these two hypothesis' are the same, and provide a numerical example?
Find the probability that is a sample of 30eruption intervals the average interval of time between eruptions was more than 75 minutes.
Suppose 31% offer both retirement plans and life insurance as benefits. If a small company is randomly selected, determine the following probabilties:
if two voters are randomly selected for a telephone survey, what is the probability that they one is a Democrat followed by a Republican? Round your answer to 4 decimal places.
An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest state. The amount of juice squeezed from each of these apples
Briefly explain how sample size affect outcome of hypothesis test. How does sample size affect measures of effect size?
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