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Assume the random variable has a binomial distribution with the given probability of obtaining a success.
Find the following probability, given the sample size.
P(x > 3), n = 6, p=0.3
11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. what are the expected no of repairs per year.
U.S. News & World Report publishes the average starting salary and the average GMAT score for MBA graduates at each of the top 80 ranked schools in the country.
Suppose the FBI set of goal of 10% for breakins, and they want to see if the current data show they are below that mark. What are the appropriate null and alternative hypotheses?
Assume that z is the test statistic and calculate the value of z∗ for testing the null hypothesis
How many variables are there in this study? What are the levels of any variables you identified and what hypothesis test would be used to analyze these data? Justify your answer.
Construct a 95% confidence interval for the population mean test score for high school seniors - difference between the fraction who preferred the incumbent and the fraction who preferred the challenger at the time of the survey.
Why is it important to study ethics in statistics? Have you seen statistics misused? Without naming specific companies or people, can you provide examples?
let x be the age in years of a car driver and let y be the percentage of all accidents for a given age due to speeding.
The life corn delight popcorn maker is normally distributed with them mean of 20 months and a standard deviation of two months. The manufacturer will replace on the life popper if it breaks during the guarantee period.
suppose that prior to conducting a coin-flipping experiment we suspect that the coin is fair. how many times would we
The Wall Street Journal reported some interesting statistics on the job market. One statistic is that 40% of all workers say they would change jobs for "slightly higher pay."
46. thirty percent of the population in a southwestern community are spanish-speaking americans. a spanish-speaking
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