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Computing probability values using normal distribution.
In a population of test scores not known to be normally distributed, the mean is 50 and the standard deviation is 5. What proportion of the observations will fall in the interval from 40 to 60?
If the sample standard deviation of the sample was $630 also the sample size was 50. Findout the 90% confidence interval of true mean.
Prepare a power curve for this decision rule
One of the main measures of the quality of service provided by any organization is the speed with that responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a chief ex..
Find out the probability that: (a) The amount requested is between $65,000 or more?
What advantage does correlation have over a cross-tab?
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
Test for single Proportion - Are the data consistent with the model? Answer yes or no, and explain briefly.
Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.
Correlation between the two variables - Evaluate the value of the correlation coefficient.
Suppose that n trials of a binomial experiment result in no successes.
Developing the histogram and pie chart for the sample data.
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