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Write the null for this: the average hemoglobin at admission less than 12.5. Is the mean enrollment hemoglobin for males different than the mean enrollment hemoglobin for females? (Null and Alternative Hypothesis required). Is a one or two sided hypothesis test required?
For this same sample of n = 45, find out the width of confidence interval around population mean? Illustrate all work.
Find the critical value, t0, to test the claim that the mean1>mean 2. Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. Assume that standard deviation 2/1 is not equal standard devi..
a professional gambler claims that he has loaded a die so that the outcome of 123456 have corresponding probabilities
three cards are drawn in succession from a decak without replacement. find the probability distribution for the number
What are the assumptions of a correlated-groups t-test? What measure of effect size is used for a correlated groups t-test?
At the 0.01 significance level can we conclude that there is a higher proportion of absenteeism among afternoon employees? Compute the value of the test statistic.
Find the equation of the regression line. What is the predicted value when x = 4? Is the correlation significant at 5% significance level (95% confidence level)? Why or why not?
Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..
During a 36 year period, lightening killed 2768 people in the US. Assume that this rate holds true today and is constant throughout the year. Find the probability that tomorrow.
The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the department needs to estimate the average number of vehicles that pass an intersection each day. A random sample of 64 ..
Standard deviation of the ages is 6 years. How large a sample should be taken so that the estimate is within 2 years of the population mean?
In a study of human blood types in nonhuman primates, a sample of 71 orangutans were tested and 14 were found to be blood type B. Construct a 95% confidence interval for the population proportion of blood type B in the orangutan population.
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