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Determine what analysis would you do on each problem (ie, one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)? Then state the null and alternative hypothesis for a problem.
Wendell Duffield, et al, believe the age of Grand Falls is younger than the accepted value of 150,000 years ago. The accepted value had a standard deviation of 10,000 years. (By the way, they published that there is evidence for their hypothesis and the age of Grand Falls is now believed to be 20,000 years ago).
Would the null hypothesis be accepted or rejected in this case?
You read a report that says, "On the basis of the simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76." What was the confidence level used to calculate this..
Utilizing form of Regression method which would give you highest performing model to forecast Sales. Utilizing your model forecast the sales
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
Using data provided, test if there is a difference between means at alpha =.05.
The area under a normal curve is always equal to 1, no matter what the mean and standard deviation are.
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis.
The standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was
Suppose that sales of lemonade and sales of brownies are independent, determine standard deviation in his revenue.
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
Create a histogram over five class intervals.
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
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