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Why is statistical significance not necessarily of practical important difference to a business decision? Provide an example and explain. Why do statisticians play only a limited role in deciding whether statistical significance requires a business action?
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
The Travel Weekly International Air Transport Association survey asked business travelers regarding the purpose for their most recent business trip.
What is the z score for a cd player will break down during the guarantee period of 2 years? The statement that the cd player breaks during the 2-year.
The probability of recovery for a certain disease is 0.65 or 65%. If 50 people are stricken, what is the probability that
Repetitions of numbers are not permitted, i.e., the same number cannot be used more than once in a total sequence. As examples, 27, 94 or 55 would not be permitted. How many different code groups can be designed?
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis in (a) above (the probability of not sharing the manager's concern because of lack of evidence)?
A company's employees are working to create a new energy bar. They would like the two key ingredients to be peanut butter and oats, and they want to make sure they have enough carbohydrates and protein in the bar to supply the athlete.
Plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two? Explain.
A bonding company want to insure a construction projects completion. If the project is cancelled due to the contractor's lack of performance
Using standard normal table, show critical value for left-tailed test with α = 0.02.
What units represent the margin of error? Suppose you want to decrease the margin of error, but want to keep the 95% confidence interval. What do you need to do?
Simplification by Factorization and finding domain-What happens when x is 6 or 3. What is the domain if x can only be 6 or 3?
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