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In one of Mendel's experiments with plants, 1064 offsprings consisted of 787 plants with long stems. According to Mendel's theory, 3/4 of the offspring plants should have long stems. Assuming that Mendel's proportion of 3/4 is correct, find the probability of getting 787 or fewer plants with long stems among 1064 offspring plants. compare answers with binomial and normal approximation.
A financial analyst estimates that the probability that the economy will experience a recession in the next 12 months is 20%. She also believes that if the economy enters a recession
A campus organization will select one day of the week for an end of year picnic. Assume that the weekdays, Monday through Friday, are equally likely and that each weekend day
Extra college-level training, and rest of the sailors arn't accounted for. How does your sample compare to what you expected to determine? Define null hypothesis.
The level of glucose, x, in blood follows a normal distribution with mean = 13.8, and std dev = 2.6. What is the probability that in a healthy adult:
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
Random sample from population of male runners in town or city. Create and interpret the 95% confidence interval for mean, mean of the population from which sample is drawn.
Suppose that population standard deviation is known to be 10mmHg and samples are from Normal population, test a= 0.01 if blood pressure reading is different from 135mmHg
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
The director of a radio broadcasting company wants to determine whether the mean length of commercials on his station is equal to 24 seconds.
The following table shows SAT scores (on the old SAT with only two sections) for a sample of students. Give the equation of the least squares regression equation.
Assuming that the manufacturer's claim is correct, what is the probability the mean of the sample is 37,650 miles or less?
The Money & Investing section of The Wall Street Journal contains a summary of daily investment performance for stock exchanges, overseas markets, options, commodities, futures, and so on.
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