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If 2 randomly chosen students are surveyed, what is the probability that both feel optimistic about their employment prospects? (b) If 2 randomly chosen students are surveyed and both feel optimistic about their employment prospects, what is the probability that both were math students?
Standard deviation of 424 and 155 respectively. at the .05 level of significance, test the claim that the new version has standard deviation equal to that of the past version.
The chamber of commerce of a Florida Gulf Coast community advertises that area residential property is available at a mean cost of $125,000 or less per lot.
What do we use the F Distribution to test? Provide an example from your place of employment or circle of influence of an instance when you could use the F Distribution.
Company A is hoping to expand its operations and a small group of investors is visiting next week. You are tasked with the duty of explaining how Company A uses this information from a linear programming model to optimize its shipping.
What is the null hypothesis in a chi-squared test of independence? List the assumptions under which the linear regression model is supposed to work.
What are the inequalites that define the region in the first quadrant. How about 2nd, 3rd and 4th quadrants?
How many students should be surveyed if a 90% confidence interval is desired and the margin of error is to be only 3%?
Suppose that combined verbal and math SAT scores follow a normal distribution with mean 896 and standard deviation 174. Suppose further that Peter finds out that he scored in the top 3% of SAT scores. Determine how high Peter's score must have bee..
Find the probability that among 8 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean . Can we conclude that is greater than 40 hours? Use the .01 level of significance.
Compare the two sets and describe what you discover. The following data sets shows the ages of the first seven presidents (President Washington through President Jackson) and the seven most recent presidents including President Obama. Age is given..
Describe the target population, sampling frame, sampling unit, and observation unit. Discuss any possible sources of selection bias or inaccuracy of responses.
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