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Find the range, standard deviation, and variance for the following sample data:
2, 11, 81, 29, 22, 59, 78, 71, 21, 43, 99, 12, 38, 74, 56, 81
Do you reject or fail to reject the null hypothesis? What is the effect size? assuming a=0.05, state your hypothesis for a one tailed test, the critical test statistic, your conclusion?
question 1using the telephone numbers listed in your local directory as your population randomly obtain 20 samples of
At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?
The bank credit card department of Carolina Bank knows from experience that 5 percent of the card holders have had some high school, 15 percent have completed high school, 25 percent have had some college
Develop a 95% confidence interval for the mean amount of household income for sub- scribers to Young Professional magazine. Interpret this interval.
Determine proportion of patients have glucose levels exceeding 115? If the patient has glucose level of 140, what percentile is this?
Compute 99% confidence intervals for the average daily maximum temperature in August for each of the three years in which you collected data. How do they compare?
What is the procedure involved in performing hypothesis tests and discuss the business uses of time series forecasting.
The national basketball association calculates many statistics, as do other professional sports organizations.
Puret grinder has required repair service according to the following distribution. Compute the mean, for the following probability distribution of the number of breakdowns per week.
Program measured in minutes is found to follow a gamma distribution with parameters a=3 and b=2. what is the probability that CPU demand of a program will exceed 1 minute?
Use exponential smoothing to forcast Aug. income. Assume that the initial forecast for Feb. is $65,000. The smoothing constant selected is x=0.1
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