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1. What is an independent (non related) sample? What is a related (dependent) sample? When should researchers use different hypothesis tests for independent and related samples? Is one type of sample preferable over the other? Provide an example of an independent sample and or a related sample that might be appropriate for use in healthcare management. Explain rationale.
2. Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA? ANOVA are easy to construct. Provide an example using either a personal or professional experience.
Which of the following statements is consistent with the scatterplot
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
Scores on an endurance test for cardiac patients are normally distributed with mean = 182 and standard deviation = 24.
Find the standard deviation and variance from the (population) data below. Describe your results.
The major shopping areas in community of Springdale include Springdale Mall, West Mall, and downtown area on Main Street. A telephone survey has been conducted to determine strengths and weaknesses of these areas and to find out how they fit in th..
In a survey of 8000 woman, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of woman who change their nail polish once a week. A 99% confidence interval for the population is??
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
a. Is there evidence the mean amount is different from 1.0 gallon (alpha= 0.01)? b. Compute the p-value and interpret its meaning. c. construct a 99% confidence interval estimate of the population mean amount of paint.
Conduct a one-tailed hypothesis test given the information below. A certain brand of Green Energy light bulbs was advertised as having an average illumination life-span of 2,500 hours. A random sample of 50 bulbs burned out with a mean life-span o..
A company auditor was interested in estimating the total number of travel vouchers that were incorrectly filed. In a SRS of size n =50 oft of the group of N = 250, were filed incorrectly.
He would like to determine whether there are more units produced on the afternoon shift than on the day shift.
Where S, A, and R are measured in dollars per week. Vanguard's marketing director is comfortable using parameter estimates that are statistically significant at the 10% level or better.
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