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An opinion poll asks a simple random sample of 100 college seniors how they view their job prospects. In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
What are examples in which non-parametric tests are used to analyze business related problems in general, and more specifically, problems related to marketing?
Arrivals 2011. Will your flight get you to your destination on time? The U.S. Bureau of Transportation Statistics publishes information about airline performance.
The number of cars arriving at Joe Kelly's oil change and tune-up place during the last 200 hours of operation is observed to be the following.
What is the probability that the percentage in the sample will deviate from the population percentage by no more than 7 percentage points?
Considering all of the day to day activities you are engaged in at work and in your personal lives, write a 200 (or more) word paper that describes at least three (3) different statistical usages that you see regularly.
What is Peter's median grade point at graduation? What is the shape of the grade point distribution?
Heights of college-aged women are approximately bell-shaped and symmetric, with almost all of them (95%) falling between 58" and 72". Find the approximate values of the mean and standard deviation.
Explain the implications of this statement in the context of ordinary least squares regression? Be sure your answer includes a discussion of hypothesis testing.
If you had a research problem appropriate for ANOVA and it was based on the results from three samples, what would be the null hypothesis?
One of the 100 test subjects is selected at random. Given that the person selected approves of the mayor, what is the probability that they vote democrat?
If it costs 1 cent to make a liver-flavored biscuit and 2 cents to make a chicken-flavored one, what is the optimal product mix for a package of the biscuits in order to minimize the firm's cost?
Use the t-distribution table to find the critical value(s) for the indicated alternative hypothesis, level of significance ?, and sample sizes n? and n?.
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