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with reference to exercise 45 construct a 98 confidence interval for the regression coefficient betaexercise 45the
with reference to example 4 use the theory of exercise 22 to test the null hypothesis alpha 2150 against the
the following data show the advertising expenses expressed as a percentage of total expenses and the net operating
with reference to exercise 43 use the theory of exercise 22 to construct a 99 confidence interval for alphaexercise
javicka1978 1 ace car rental has three main models that are used in it midsize range of cars the cars are very similar
use the theory of exercises 24 and 26 as well as the quantities already calculated in exercise 51 for the data of
redo exercise 61 when the dosage is 20 milligrams note the greatly increased width of the confidence limits for the
with reference to exercise 65 use the formula obtained in exercise 31 to construct a 95 confidence interval for
the following data pertain to x the amount of fertilizer in pounds that a farmer applies to his soil and y his yield of
with reference to exercise 67 use the formula obtained in exercise 31 to construct a 99 confidence interval for
use the formula of exercise 29 to calculate a 95 confidence interval for beta for the numbers of hours studied and the
the table at the bottom of the page shows how the history and economics scores of 25 students are distributed use the
rework exercise 71 coding the class marks of the history scores -2 -1 0 1 and 2 and the class marks of the economics
a use an appropriate computer program to obtain the sample correlation coefficient for the data of exercise 64b test
the following are data on the average weekly profits in 1000 of five restaurants their seating capacities and the
when the x1s x2s andor the xks are equally spaced the calculation of thenbsps can be simplified by using the coding
the regression models that we introduced in sections 2 and 6 are linear in the xs but more important they are also
the following data pertain to the demand for a product in thousands of units and its price in cents charged in five
to judge whether it was worthwhile to fit a parabola in exercise 84 and not just a straight line test the null
use the results obtained for the data of example 9 to construct a 90 confidence interval for the regression coefficient
with reference to exercise 77 test the null hypothesis beta2nbsp 100 against the alternative hypothesis
with reference to exercise 78 construct a 98 confidence interval for the regression coefficient beta2exercise 78the
the probability that a one-car accident is due to faulty brakes is 004 the probability that a one-car accident is
use the results obtained for the data of example 9 and the result of part b of exercise 40 to construct 99 limits of
in planning the operation of a new school one school board member claims that four out of five newly hired teachers