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The CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees (n = 474) and their starting salaries. The study collected current and beginning salary data for each of the 474 employees and the researcher conducted a statistic and the results are presented below. Using the five steps of hypothesis testing, explain what the researcher might have done, including the appropriate analysis, and interpret the results. Are there any problems with this study? If so, explain what they are. Beginning salary mean = $17,016.09, SD = $7,870 Current salary mean = $34,419.57 SD = $17,075 Test statistic = 35.036, p <.05
A case-control study of relationship between liver cirrhosis among both non alcoholics and alcoholics. Describe whether smoking is confounder.
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired.
If the research question were defined as will buyers purchase more of a product in a blue colored or silver package? the most appropriate type of research would be
Is it reasonable to conclude that the distribution is normally distributed with a mean of $10 and a standard deviation of $2? Use the .05 significance level.
The standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased? State the hypothesis?
Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations of X and Y.
Using the Poisson approximation, what is the probability that three or fewer students will drop out of a random group of 200 entering students?
Forty percent of the homes constructed in the Quail Creek area include a security system. Three homes were selected at random. What is the probability all three homes selected have a security system?
Calculate the mean, mode and median of the grouped data derived from the frequency distribution above. Compare the results obtained from
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
We then counted the number of statements in the summary that can be classed as inferences. Assume inferences are interval measurement.
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