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A store sold 12 stereos on Monday, 17 on Tuesday, 28 on Wednesday, 17 on Thursday and 26 on Friday. At the 0.01 level, test if there is a difference in the number of stereos sold on each weekday. State the hypotheses and identify the claim, find the critical value(s), compute the test value, make the decision and summarize the results.
Rewrite the equation in slope-intercept form. Then identify the slope and the y-intercept of the line.
Compute test statistic and p -value for each sample. (Negative amount must be pointed out by minus sign.)
Pproportion who are sent to prison after pleading innocent and being found guilty? No, as the test value -1.96 is inside interval (-2.58, 2.58), No, as the test value -4.94 is outside interval (-1.96, 1.96).
The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.
Die with 4 sides {1, 2, 3, 4} is tossed 2 times. Let X equal maximum of two observations and let Y equal minimum. Determine joint pmf of X and Y, and correlation coefficient. Are X and Y independent?
A study of 100 sedentary people in this age group is planned to test whether they have a higher or lower level of plasma glucose then the general population.
What is the distribution of X? State its mean and variance.
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
Assume you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have.
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers.
Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean . Can we conclude that is greater than 40 hours? Use the .01 level of significance.
Apply the EOQ model to the following quantity discount situation in which D=500 units per year, C0=$40, and the annual holding cost rate is 20%. What order quantity do you recommend?
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