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In one area of an orchard, there are 17 trees, of which 10 are busy and 7 are lean. If 4 trees are randomly selected for testing a new spray, what is the probability that exactly 2 bushy trees are selected?
A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively;
By using standard normal table, determine critical value (or values) for= 0.14 right-tailed test.
State the null and alternative hypotheses to determine if the average number of hours until spoilage begins differs for the preservatives A and B?
In a random sample of 500 families owning sets in the town was found that 340 subscribed to ASTRO. Find a 95% confidence interval for actual proportion of families in this town who subscribe to ASTRO.
68 of these drivers were wearing seat belts. We wish to find if these data give good reason to conclude that more than half of Hispanic female drivers in Boston wear seat belts.
The population mean height of a basketball player is 220 cm with a standard deviation of 20 cm. In a sample of 49 basketball players, what is the probability of getting a sample mean height of 215 cm or more?
standard deviation = $23.86 million mortgage amount standard deviation = 2.58% interest rate. what is the equation that predicts mortgage amount from interest rate? compute the slope of the straight line.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Interpret the following table showing the percentage of individuals on a low-fat or low-cholesterol diet by gender and age.
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8.
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
the national center for health statistics reported that of every 883 deaths in recent years 24 resulted from an
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