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Question: A survey showed that 77% of adults need correction (eyeglasses, contacts, surgery, etc. ) for their eyesight. If 14 adults are randomly selected, find the probability that no more than 1 of them need correction for their eyesight. Is 1 a significantly low number of adults requiring eyesight correction? The probability that no more than 1 of the 14 adults require eyesight correction is (Round to three decimal places as needed.)
Assume high temperatures are normally distributed. Based on this data, find the 98% confidence interval of the mean high temperature of towns.
Determine the probability function and the distribution function of X and sketch their graphs.
You are recently hired at a sleep research company to perform statistical calculations. Your boss has assigned you two hypothesis tests to run.
Indicate what the mean in part a indicates about the relative prices of the opening and closing stock prices for GE. Compare the dispersion of the opening stock prices with the difference between the opening and closing stock prices.
in linear regression the dependent variable must be
2007 randomly selected adults were asked if they are in favor of or against cloning. The following table gives the responses.
Construct a 95% confidence interval for the average weekly gas usage by people in this town. Use the t distribution.
A survey of 400 persons showed that 54.3% were in favor of product A. Test whether a majority were in favor of product A using a .05 significance level
What is the probability that at least four of the six will give up in the first two weeks?
you arrive at a bus stop at 800 a.m. knowing that the bus will arrive at some time uniformly distributed between 845
the mean score of the first calculus exam was 81. the standard deviation was 12. find the smallest interval about the
Are very young infants more likely to imitate actions that are modeled by a person or simulated by an object? This question was the basis of a research study
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