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What are some examples of two measurement-level (quantitative) variables that are likely to be correlated because they are both changing over time?
gigi and ron are candidates for mayor in a city. you want to estimate the proportion of gigis voters with 90 confidence
the monthly starting salaries of students who receive an mba degree have a standard deviation of 110. what size
The number who will go to the Ohio State University is a binomial random variable. What is the mean number of seniors going to the Ohio State University?
1.a researcher wants to know if calcium is an effective treatment for lowering blood pressure. he assigns one randomly
Make a graph to display the distribution of doctors per 100,000 people.Write a brief description of the distribution.Are there any outliers?If so, can you explain them.
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
What do you mean by degrees of feedom in statistics? Explain the concept of degrees of freedom for each of the following hypothesis tests.
a study concluded that among people with a certain virus 99.4 were tested correctly positive while people without the
whats a difference between the z distribution and the t distribution?they have different meansthey have different
A biased coin with probability of head being .6 is tossed 12 times. What is the probability that number of head would more than 4 but less than or equal to 10.
The speed limit on Interstate 75 around Findlay, Ohio, is 65 mph. On a clear day with no construction, the mean speed of automobiles was measured at 63 mph with a standard deviation of 8 mph.
200 people were surveyed and asked to rate mayor Michael Bloombergs effectiveness towards education. The rate scale is 1 (lowest) to 10 (highest). Mayor Bloomberg's average rating was 7.50, with a standard deviation of 2
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