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An employee gives a pre-employment evaluation to a large group of applicants. The scores are normally distributed with a mean of 154 and a standard deviation of 21. The employer wants to interview only those applicants who score in the top 15%. What should the cut-off score be for the interviews? (Round to nearest whole number).
176
181
166
173
LSAT scores are normally distributed, with a mean of 150 and s = 10.
The results of the simple linear regression are provided below.
Is there evidence that population mean amount is different form 8.17 ounces? (Use a 0.05 level of significance.) with sample standard deviation of 0.051 ounce.
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
The weight of the first orange minus the weight of the second orange) is a random variable with standard deviation and individual outcomes are uncertain but happen in a predictable manner through time.
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
Can we conclude that mean time for game is less than 3.50 hours? Use.05 significance level.
The following table shows the number of miles driven in each trial.
The null hypothesis is to be tested at the 10% level of significance. The critical value from the table is:
Find the value for the correlation coefficient r.
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
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