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If it is known that a simple linear regression model explains 56 percent of the variation in the dependent variable and that the slope on the regression equation is negative, then we also know that the correlation between x and y is approximately -0.75.
1.a psychology instructor asked the 100 females in her class to rate their intelligence on a scale of 1 to 10. the
in a manufacturing process a random sample of 36 bolts manufactured has a mean length of 1.71 inches with a standard
Please show all steps to simplifying the rational expression.
Randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values listed below have a mean of 12.19 ounces and a standard deviation of 0.11 ounces. Use a 0.05 significance level to test the claim that cans of coke hav..
suppose x has a geometric distribution with success probability 14 that is pxk 34k-114. find all the medians of
If 25 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 44.24 tons. Assume that the variable is normally distributed.
q1. the grades of 20 students are listed below. use the stem amp leaf to determine the shape of the distribution.
The J.O. supplies company buys calculators the probability of a defective calculator is 10%. If 100 calculators are selected at random, what is the expected number of defective?
By using the results in (a), construct a boxplot. Indicate clearly on the boxplot the five-number summary. Are the data skewed? If so, describe its skewness.
a machine produces parts with lengths that are normally distributed with ? 0.55. a sample of 10 parts has a mean
The Bureau of Labor Statistics says that baggage handlers, trash haulers, and coal miners are among the occupations having the highest risk of the debilitating injury or illness. For coal miners working over the course of a year, 3.60 injuries per..
Interstate 90 is the longest of the east-west U.S. interstate highways with its 3,112 miles stretching from Boston, MA at I-93 on the eastern end to Seattle WA at the Kingdome on the western end. It travels across 13 northern states; the number of..
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