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A survey found that people keep their televisions an average of 5.8 years. The standard deviation is 0.76 year. If a person decides to buy a new TV, find the probability that he or she owned the old one for the given amount of time. Assume the random variable is normally distributed.
(A)more than 4.1 years
The probability that a randomly selected person has owned his or her old TV for more than 4.14.1 years is what percent?
In a study of high-achieving high school graduates, the authors of the report "High-Achieving Seniors and the College Decision"
Compare the median rates of malnutrition for urban and rural areas.What effect do you think removing the three outliers would have on the interquartile range.
A survey was done of parents with children under five. Seven hundred eighty-four parents were surveyed on their children's eating habits and fast food.
a spymaster has a network of 7 operatives whom he pays out of a slush fund containing 20000. for accounting reasons his
how many ways are there to pick five people for a committee if there are six different men and eight different women
IQ scores are designed to have a mean of 100 and a standard deviation of 15. IQ testing is one way in which people are categorized as having different levels.
Suppose 10 of the 20 stored works are by the same local artist. What is the probability that all 7 of the selected paintings will be by this artist?
Total development costs are $250/SF. Investors are willing to pay property prices of $11.76 per dollar of current rental income.
The filter has a cutoff value for the point total; any message rated lower than that cutoff passes through to your inbox, and the rest, suspected to be spam.
Explain why we cannot use this information to construct a confidence interval for the proportion of all people at the game who are fans of the home team.
How are the variance and standard deviation related?- If what must be true about the scores in the distribution? Verify your answer using an example.
the tensile strength of paper is modeled by a normal distribution with a mean of 35 pounds per square inch and a
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