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1. What are the only three ways to setup the Hypothesis (Ho & H^)? ( the last symbol "^" is in the bottom of the H)
2. What are the assumptions regarding a large one sample z-test and what Excel aid would you use to perform the test, Data Analysis or MacDolt?
3. What are the assumptions regarding a small one sample t-test and what Excel aid would you use to perform the test, Data analysis or MacDolt?
4. What are the assumptions regarding a small two sample t-test and what Excel aid would you use to perform the test, Data analysis or MacDolt?
5. What are the assumptions regarding an ANOVA test and what Excel aid would you use to perform the test, Data analysis or MacDolt?
6. Critically discuss the assumptions, if any, regarding a Chi-square test?
7. What are the assumptions to apply linear regression?
Describe what the researcher must do if one of the requirements is not met and give illustrations.
Find a 90% confidence interval for the mean amount left by all groups.
Confirm that these statements are accurate by finding the geometric mean rate of increase.
What is the distribution of sample means.
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
The quality-control inspector checks 200 pieces in a certain operation. The piece is either good or defective. The record for nine hours.
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
What fraction of the calls last between 4.2 and 5 minutes?
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
Chi-square test for goodness of fit - difference in the use of the four entrances?
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesized value for:
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