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Tomato plants were grown in a greenhouse under treatment conditions consisting of combinations of three soil types (Factor B) and two fertilizers (Fac tor A). Two plants were grown under each of the six treatment combinations. The (coded) yields of tomatoes are recorded below.
Factor B
Factor A
1
6
10
4
8
(a) Make an interaction plot for these data.
(b) Based on the plot in part (a), what model would you suggest?
(c) Find estimates for all the parameters in your model.
Set up a scatter diagram. Use the least-squares method to find the regression coefficients and State the regression equation.
If a claim is randomly selected, what is the probability the person was under 25 or male?
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question 1in a certain region the mean annual salary for plumbers is 51000. letnbspxnbspbe a random variable that
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a production process is set to manufacture bolts with a diameter of .5 inches. the process has a standard deviation of
Would you use a one-tailed or two-tailed test? Explain your response.
If a study had a result of F (2, 147)= 4.56, p = 0.003, how many groups were in the study, and what was the sample size?
what is the probability of having the same number when rolling two dices? what is the probability of having at least
for a medical study a researcher wishes to select people in the middle 60 of the populartion based on blood pressure.
If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean is 500 if you use the Z test?
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