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Adding to your Week 3 paper, prepare and submit a 1,050-1,750-word paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the following:
a. Data analysis using descriptive statistics
1) Calculate the measures of central tendency, dispersion, and skew for your data2) Display your descriptive statistical data using graphic and tabular techniquesa) Line graphb) Bar graph3) Based on your measures of central tendency and graphs, discuss the best measures of central tendency and dispersion of your data. Justify your selection
b. Conclusions
Discuss whether your research findings answered your problem statement (research question), or whether more research might be necessary hide problem.
The standard deviaiton is 2 pounds. If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
The standard deviation of 6. What is the probability that a class of 50 has an average midterm mark that is less than 75?
What is the role of probability concepts in business decision making? Define probability concepts.
Explain in language that the manager can understand why we cannot be confident that sales rose by 6%, and that in fact sales may even have dropped.
A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
The average efficiency of the sample is calculated to be 91.0% and the standard deviation of the sample is 0.8%. If we want to cut the confidence interval by one-half, how many more motors should be tested?
Compute and explain a 90% confidence interval for the population proportion of executives who believe the U.S. legal system hampers the ability to compete.
A food snack manufacturer samples 13 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.7 oz. and the sample standard deviation is 0.50 oz., find the 95% confidence interval of the true mean.
What hypothesis testing procedure would you use in the following situations? Explain your reasons, including assumptions and limitations for selecting the procedure.
Adults is approximately normal with a mean of 191 lbs. and a standard deviation of 20 lbs. Using the 68-95-99.7 rule. What percent of males weigh more than 211 lbs?
A sample of 60 smokers has a mean cotinine level of 125. Assuming that sigma=25, find the 90% confidence level estimate of the mean cotinine level of all smokers.
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