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Need to seT the work breakdown for this question and answer to the multiple choice after.
The following data were collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo. After treatment for 5 days with the new compound or placebo the extent of wound healing is measured and the data are shown below.
Percent Wound Healing
Treatment
0-25%
26-50%
51-75%
76-100%
New Compound ()
15
37
32
41
Placebo ()
36
45
34
10
Is there a difference in the extent of wound healing by treatment? (Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level of significance.
df= ________
alpha= ________
Reject H0 if χ2>________
Compute expected frequencies
Expected Frequency = (Row Total * Column Total)/N.
Complete the expected frequencies for each cell.
Total
New Compound
( )
125
Placebo
51
82
66
250
Compute χ2.
χ2= ________
Based on comparing the computed χ2 to the rejection level χ2 which of the following is (are) true?
The Economic Policy Institute reports that the average entry-level wage for male college graduates is $22.82 per hour and for female college graduates is $18.01 per hour. The standard deviation for male graduates is $3.72 and for female graduates is..
The degree of flatness or peakedness of a population
In a recent sample of 84 used car sales costs, the sample mean was $6,425 with a standard deviation of $3,156. Assume the underlying distribution is approximately normal. a. Which distribution should you use for this problem? Explain your choice.
A company claims the average time a customer waits on hold is less than 5 min. A sample of 35 customers has an average wait time of 4.78 min. Assume the population standard deviation for wait time is 1.8 min. Test the company claim at the α = 0.05 si..
Calculate the mean and standard deviation of # of sales people (x) and sales (y). Find sample size n - Calculate the correlation coefficient with all three methods (covariance method, z-score method, and correlation tool in Excel).
Use the confidence intervals you computed in parts a and b to compare the mean number of dealers visited by early replacement buyers with the mean number of dealers visited by late replacement buyers.
According to the U.S. Department of Agriculture, 58.8% of males between 20 and 39 years old consume the minimum daily requirement of calcium. After an aggressive "Got milk" advertising campaign, the USDA conducted a survey of 55 randomly selected ma..
Calculate the value of the test statistic z. By comparing z with critical values, test H0 versus Ha at a = .05. Calculate the p-value for testing H0 versus Ha.
1. the study you will evaluate for your assignment isbinge drinking and alcohol-related behaviours amongst pacific
Suppose that at a blood drive a total of n = 300 participants donate blood, and the blood type for each donor is recorded. A "universal" donor is one who has a blood type of O negative. Though their goal was to have at least 30 universal donors duri..
1. Find the critical value za/2that corresponds to a degree of confidence of 98%. Select one: a. 2.575 b. 1.75 c. 2.33 d. 2.05
Advise John Jones of the tax consequences of Items 1 – 6, above. You should discuss what amounts would be included in his assessable income or, if any item is not assessable income, why that is so. Your answer should include a discussion of the follo..
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