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A bottling company is supposed to fill bottles with an average weight of 16 ounces. The company randomly selects several bottles and weighs the liquid. How large of a sample must be taken so that the half-length of a 95% confidence interval is 0.1 ounces? It is assumed that the population standard deviation is 0.25 ounces?
Note that if only a single batch of pulp was produced under each preparation method and split into 12 sub-batches for the cooking factor, this would be an example of pseudo-replication. Why?
The table shows the retail market share of passenger cars from Ford Motor Company as a percent of the US market.
How many participants need to be enrolled in each group to achieve 80% power using a two-sided test with significance level =.05
Choose a research article from your field.Write the five hypotheses that this study is testing.Write both the null and alternative hypotheses for each one.
Let x be the weight of a fawn in kilograms. Convert the following x interval to a z interval. Round to the nearest hundredth.
A random-effects ANOVA refers to the analysis where the levels included in the study represent a random sample of all levels that exist.
Run a simple regression of the dependent variable demand on the independent variable price and observe the coefficient on price.
Senator Hayes is considering a a run for the U.S. presidency, but she is only 35 years of age, which is the minimum required age. While investigating this issue, she finds the ages of past presidents when they were inaugurated
Create a 2 X 2 from the information provided and calculate the appropriate statistic to determine the odds of contracting uterine cancer when using estrogen
the percentage of couples where both parties are in the labor force is 52.1. choose 5 couples at random. find the
Standard deviation of 0.17 ounces, assuming the weight of cereal is normally distributed, determine the likelihood that a package will contain more than 12.2 ounces?
Using the empirical rule, what is the approximate percentage of women between 156cm and 166cm? Using Chebyshev's Theorem, at least what percentage of women are between 149cm and 173cm?
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