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For an agricultural experiment, 300 seeds were planted in one plot and 200 were planted in a second plot. If exactly 25 percent of the seeds in the first plot germinated and exactly 35% of the seeds in the second plot germinated, what percent of the total number of seeds germinated?
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
The standard deviation of the time to complete the entire homework assignment
Describe the sampling distribution of the sample proportion
Probability distribution described by the following density curve and The expected value of the sum of the weights of the two oranges, in pounds
Perform hypothesis testing on one variable's data.
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
determine if the improvement is of practical significance one should. Crop researchers plant 100 plots with a new variety of corn. The average yield for these plots is x' = 130 bushels per acre
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
LSAT scores are normally distributed, with a mean of 150 and s = 10.
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
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