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1. An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots. The ANOVA table is given below.
Which of the following statements is correct?
A. The experimenter concludes that in subsequent experiments we will only study the effects of variety on yield, as planting density has no effect (P-value = 0.4014).B. The experimenter concludes that certain planting densities work better with certain varieties for improving yield. (P-value for interaction = 0.0009.)C. Both choices are correct.
2. An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3). Six trees of each variety were randomly selected from the orchard, and the three pesticides were than randomly assigned to the trees; two trees for each pesticide. Yields of fruit, in bushels per tree, were obtained after the test period. A partial ANOVA table is given below.
Determine the mean and the standard deviation of the sample.
Find the probability that the time taken for a randomly chosen customer to be dealt with by a cashier is more than 180s.
Compute the test statistic. At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.
Elizabeth Bailey is the owner and general manager of Princess Brides, which provides a wedding planning service in Southwest Louisiana.
The data in the following tables are some of the results of an Internal Revenue Service survey of taxpayers. Analyze and interpret the data.
Assume the least squares equation is Y' = 10 + 20X. What does the value of 10 in the equation indicate?
99.7% of the final game scores fall within what range, what percent of all final game scores did the pistons have more than 106 points?
If the maximum error of estimate for the proportion of bartenders hearing job complaints is 4.4 percentage points, what is the degree of confidence used?
Suppose that the number of accidents occurring in an industrial plant is described by a Poisson distribution with an average of one accident per month. Let x denote the time (in months) between successive accidents.a Find the probability that the ..
Indicators of a maternal diagnosis of toxemia during the pregnancy, a condition characterized by high blood pressure and other potential complications, are saved under the variable name tox (1: toxemia; 0: no Toxemia).
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
Joe Mauer of the Minnesota Twins had the highest batting average in the 2009 Major League Baseball season. His average was .461. So assume the probability of getting a hit is .461 for each time he batted. In a particular game, assume he batted fou..
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