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The GPA of 50 students are listed below.
4.0 2.4 3.1 3.7 3.5 3.8 2.9 2.5 3.6 4.02.7 2.2 4.0 3.3 2.1 3.9 2.0 2.3 1.9 2.53.5 1.8 3.6 4.0 3.9 3.0 2.4 3.3 2.0 3.73.1 2.5 3.5 2.8 3.2 4.0 3.8 4.0 2.1 2.82.6 3.5 3.0 3.4 3.6 4.0 3.5 2.1 2.0 3.2
In the regards to a stem-and-leaf plot that best represents the given data, what would the stem be? Determine which stem would have the most leaves and explain what this means in terms of the GPA's.
New study is to use 90% confidence level. Estimate is to be within 1 percent of population proportion. Determine the essential sample size?
What is the range of correlation coefficient? Give a real world example of positive and negative correlation. Do you want stocks which are highly correlated with each other or less correlated? Why?
Following are different algebraic expressions of the production function. Decide whether each one has constant, increasing, or decreasing returns to scale.
A meat processing plant has processed an average of 100 tons per day for the last several years. Newer processing machines have been installed recently.
Consider a hypothesis test of H0: μ = 0 against H1: μ > 0 where μ is the mean percent change in total body bone mineral content of young women. The population standard deviation is σ = 2. The level of significance for the test is α = 0.05.
Calculate a 99% confidence interval for the true mean difference between pretreatment and after treatment testosterone levels of young male TBI patients.
A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 99% confident that her estimate is correct.
Specify the null and alternative hypotheses you would use to determine if the opinions of Internet users are evenly divided among the four categories.
What is the null hypothesis? Use a = 0.05 .
Calculate the Coefficient of Skewness and the Coefficient of Variation for time spent working on QM.
What is the decision regarding the null hypothesis (is there a difference in the mean numbers of cameras sold at the three department store chains)?
State the correct decision and give justification for your decision.
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