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An educator claims that the drop out rate for seniors at high school in ohio is 15%. last year, 38 seniors from a random of 200 ohio seniors withdrew. at a=0.05, is there enough evidence to reject the educators claim?
determine the named distribution that would best used to find situations and explanation why.a bag containing 60 mampms
A sample of the math test scores of 35 fourth-graders has a mean of 82 with a standard deviation of 15.
test at the 0.01 level, was the mean time for the Delta visits significantly less than that for the British Airway visits? Identify and interpret the p-value for the test.
What is the logic behind using the sum of the products of deviation scores as the numerator of the formula for the correlation coefficient? Is this logic sound?
Test the claim of the engineering firm. Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
testing equality of variances.over the last several years the use of cell phones has increased dramatically. according
According to the historical data, the life expectancy in Argentina is equal to the life expectancy in Bolivia. A new study has been made to see whether this has changed.
What are the similarities between dividing two fractions and dividing two rational expressions?
A trucking firm suspects that the mean lifetime of a certain tire it uses is less than 35000 miles. To check the claim the firm randomly selects and test 54 of these tires and gets a mean lifetime of 34,570
the auto parts department of an automotive dealership sends out an average of 8 special orders daily. the number of
area of interest gender relationships between leaders who score high on sociopathology tests. ceo as sociopath null
What sample size is needed to estimate with 95 persent confidence the mean intake of calcium within 20 units of the true mean if the intake is normal with a variance of 1900 units?
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