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A student takes a 20-question multiple choice exam and guesses on each question. Each question has 4 choices, only one of which is correct. Find the probability that the student makes at least a "B" assuming that in order to make at least a "C" the student must score at least 70%.
In this assignment, you develop two purpose statements using the same data set (different purposes, same data) and will use regression and two sample hypothesis testing to analyze the same set of data. For example, you may want to determine if there ..
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
Calculate the mean and standard deviation of the sample mean based on data from 100 stores.
Calculate the margin of error that would be used to determine a 95% confidence interval for the mean pulse rate of all women.
If 134 out of a random sample of 235 college students expressed an intent to vote, can we reject the aide's estimate at the 0.05 level of significance? Perform a one-tailed test.
Sample of six car washes averaged $5.70 and had the sample standard deviation of $1.30. Suppose the normal population, use critical value method to test claim at a= 0.05.
For population with mean of µ=60 and a standard deviation of s=24. Determine the z score corresponding to each of following samples.
In the past HR uses an average of 25 vacation days per worker in order to make available man-hour and payroll predictions. Is there evidence to show that the number of vacation days decreased over the past year? Use alpha = .05
What is the test statistic? Give answer to three decimal places What is the critical value? Give answer to three decimal places. The proper conclusion is to reject H0.
question 1 over 90 of the nations school districts according to a recent research published in the journal of education
Test the manager's suspicion at the 5% level of significance. Find the P-value or an interval containing the P-value for the sample test statistic.
Critically discuss the difference between the "skewedness" of the distribution of a dataset and its "kurtosis"? What is the expected value (EV) of an investment if there is a 20% chance of realizing a return of $20,000 or a 55% chance of realizing a..
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