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1. Calculate the sample size needed given these factors:
2. Calculate the sample size needed given these factors:
Initialize each of the variables below to their current values, and use a DO LOOP to calculate their estimated values for the next ten years. For example, next year's wage expense will be this year's wage expense plus 6 percent of this year's amount;..
Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesse..
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience? At 95% confidence, what is the margin of error? What is the 95% confidence interval for the proportion of the population o..
Let X be the sample mean of a random sample of size n from a uniform distributionon the interval [0, b], and let bb = 2X be an estimator of the upper endpoint b.(a) Demonstrate that bb is an unbiased estimator of b, and find the variance of th..
The manager of a large maintenance department in a manufacturing setting. Discuss how the understanding of probabilities will be beneficial to you and the company. I would have expectations of more than 200 words. The content is important.
A formal statement that there is an absence of relationship between variables when tested by a researcher is called what?1.Null hypothesis?
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action
A child psychologist was interested in the difference in age (in years) between a boy and a girl when they first learn to ride a two-wheeled bicycle. The psychologist calculated a 99% confidence interval for the difference in age to be (-0.58, 0.71)...
Explain the difference between a normal Distribution and a binomial distribution. How do we know which one to use?
A sales man normally closes on 80% of his presentations. Assuming the presentations are independent, find the probability of each of the following: a) he fails to close for the first time on his fifth attempt, b) he closes his presentation on his fou..
A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will be between 85 and 125 points?
Calculate the odds ratio of the fish being female in the cold environment compared to the fish in the warm environment. Interpret this ratio in the context of the question.
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