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Using probability: How can you use probability to improve your chances of winning at a casino. Provide specific examples using concepts learned in this module.
Election officials take a random sample of 100 signatures and thoroughly investigate them to find that 84% are valid. Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
You only worry if there is at least a 50 or more percent chance that you have the disease. Suppose that test has same specificity = p For what value of p will you start to worry?
a basketball coach wants to know how many free throws an nba player shoots during the course of an average practice.
Construct a frequency distribution of the sample mean, and plot a histogram of this distribution. Use the central limit theorem to calculate and identify the sampling distribution of the sample mean.
An electric power trading company has an option to buy 1,000,000 terawatts of electricity from a producer for $10 per terawatt. Other electric power trading companies have received this option and the company knows a decision must be made quickly.
Also, assume that X = number among 20 randomly selected coffee purchasers who select a national brand, and that the random variable X follows the binomial distribution.a. What is the probably that at most 15 customers choose a national brand?
a research firm tests the miles-per-gallon characteristics of three brands of gasoline. because of different gasoline
The airline must sell 150 seats to break even on this particular flight. On what percent of the flights does the airline make money?
question which is relatively better a score of 79 on a psychology test or a score of 38 on an economics test?
a magazine published a study on the ammonia levels near the exit ramp of a highway tunnel. daily ammonia concentrations
In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size..
you notice in your introductory psychology class that more women tend to sit up front and more men sit in the back.
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