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Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class? How many are ineither class?
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
Using data provided, test if there is a difference between means at alpha =.05.
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
Sarah is a 60 year old Anglo female in reasonably good health. She wants to take out a $50,000 term life insurance policy until she is 65.
Compute the value of z and state your decision regarding the null hypothesis.
What would be the most appropriate graphical representation to show the dispersion of new home prices in a particular area? Why?
Let X1, ..., Xn be a random sample from a two-parameter exponential distribution, Xi ~ EXP (theta, eta). (a) Assuming it is known that eta = 150, find a pivotal quantity for the parameter theta based on the sufficient statistic.
Find out best decision, by using following decision criteria.
What results in your departments seem to be correlated or related to other activities? How could you verify this? Create a null and alternate hypothesis for one of these issues. What are the managerial implications of a correlation between these v..
Produce a printout of the frequency tables, showing the total of both frequencies.
An experimenter is randomly sampling 5 objects in order from among 49 objects. What is the total number of samples in the sample space?
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