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The rust mite, a major pest of citrus in Florida, punctures the cells of leaves and fruit. Damage by rust mites is readily recognizable because the injured fruit displays a brownish (rust) color and is somewhat reduced in size depending on the severity of the attack. If the rust mites are not controlled, the affected groves have a substantial reduction in both the fruit yield and the fruit quality. In either case, the citrus grower suffers financially because the produce is of a lower grade and sells for less on the fresh-fruit market. This year, more and more citrus growers have gone to a program of preventive maintenance spraying for rust mites. In evaluating the effectiveness of the program, a random sample of sixty 10-acre plots, one plot from each of 60 groves, is selected. These show an average yield of 850 boxes of fruit, with a standard deviation of 100 boxes. Give a 95% confidence interval for m, the average (10-acre) yield for all groves utilizing such a maintenance spraying program. Assume that s can be replaced by s.
the national association of realtors released a survey indicating that a surprising 43 of first-time home buyers
you and your opponent both roll a fair die. if you both roll the same number the game is repeated otherwise whoever
find the average and the sd for the list 11 15 9 7 3. using the average and sd you found convert the values in the list
question a production run of toothpaste requires a fixed cost of 100000. the variable cost per unit is 3.00. if 50000
question the associated press reports that the mean trading volume for equity and index options contracts was 3.6
Checking the output by almost continuous sampling since the abnormal condition began. What is the probability that in a sample of 10 pieces: Exactly 5 will be defective?
a machine that produces a major part for an airplane engine is monitored closely. in the past 10 of the parts produced
Use the Chi-Square Goodness-of-Fit test to see if there is a difference between the number of side effects from the different brands of medication. Use a significance level of .01.
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At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
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