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Given the monthly incomes for 16 randomly selected people with a bachelor's degree in business:
4832.15 5222.36 4917.71 4111.22 3629.96 3749.87 6474.75 5691.484646.46 4282.82 2919.35 4752.61 5525.25 4735.39 4019.51 4827.99a. Find the sample mean
b. Find the sample standard deviation
What are the four assumptions for the chi-square tests? What are the hypothesis when conducting the chi-square tests for goodness-of-fit?
A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the household, age of the head of the household, curr..
What does analysis of variance mean? One of the students answers this question as follows:
there are 7 seniors and 3 juniors in the statistics club and a team of 5 will be randomly selected to attend the joint
Assume that ages at onset of this disease are normally distributed for each gender, do not assume the population variances are equal. What are the appropriate null and alternative hypotheses?
Frequently, tests that yield abnormal results are repeated for confirmation. What is the probability that for a normal person a test will be at least 1.5 times as high as the upper limit of normal on two seperate occasions?
Hypertensive experimental (n=100) is 14%, placebo (n=100) is 22%. Generate a 95% Confidence interval for difference in proportions of patients with hypertension between groups.
in a normal distribution with mean 50 and a standard deviation 10 what is the probability of randomly sampling a
Assume independent events. Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
You have $380,000 in your bank account. The interest rate in your account is 5%. Solve for the following showing your work: How much interest will you accumulate if interest is compounded annually over the next five years?
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Describe the sampling distribution model of this mean.
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