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In my office we have 20 men and 35 women. The Board of Directors is going to appoint four new positions: President, Vice President, Sales Director, and a Lawyer.
How many ways can this be done if one person can only hold one job?
A business owner decides to use a binomial distribution to solve one of his problems.
If the politician is correct, what is the chance that you would observe 9 or fewer accidents involving a teenage driver?
Of 260 females, 224 answered yes. Construct a contingency table to evaluate the probabilities. What is the probability that a respondent chosen at random:
question 1 the mean starting salary for college stats major graduates in spring of 2011 was 65000. assuming a normal
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
Explain how the null hypothesis is the basis of this calculation. Determine the value of the relevent test statistic and the corresponding p-value.
Is this sample sufficient to conclude that the eye spots have a significant influence on the birds behavior? Use a two tail test with alpha =.05. Compute the estimated Cohen's d to measure the size of the treatment.
a) 95% of confidence intervals generated will include the sample mean X. b) 5% of the confidence intervals generated will include the true mean μ
Sample of 36 packages reveals mean weight to be 3.01 pounds, with standard deviation of 0.03 pounds. What is the estimated population mean?
The population mean height of a basketball player is 220 cm with a standard deviation of 20 cm. In a sample of 49 basketball players, what is the probability of getting a sample mean height of 215 cm or more?
Two cards are drawn without replacement from a pack X measures hearts drawn and Y measures clubs drawn, both are random variables.
Data collected by a child development scientist produced a 95% confidence interval for the mean age, μ (in weeks) at which babies began to craw as [21.4, 31.6]
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