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Margin of error
A TV newscaster reports the results of a poll of voters, and then says, The margin of error is plus or minus 4%. Explain carefully what that means.
Determine how he should divide the n people into two groups to search the two sides of the mountain so that he will have the highest probability of finding the boy. How does this depend on u?
the sample variance 1.8 hours. If μ= 3.0, then calculate the observed value for the t-statistic. Construct 90% confidence interval for the mean.
Describe what type of control chart you can use and how do you calculate the control limits (provide formula) to check if the calculate the control limits in this organization is in control.
A standard IQ test has mean of 98 and a standard deviation of 16. We want to be 99% certain that we are 8 IQ points of the true mean. Determine the sample size.
Why does day light savings occur and what day does it start?
Making use of the fact that the chi-square distribution can be approximated with a normal distribution when ν, the number of degrees of freedom, is large, show that for large samples from normal populations is an approximate critical region of siz..
A random sample of 10 yields the following thicknesses (in millimeters): 0.0048, 0.0053, 0.0051, 0.0051, 0.0052, 0.0049, 0.0051, 0.0047, 0.0054, 0.0052. Find the average loss per reel.
Criticize the following definitions in light of the eight rules for lexical definitions:- "Clock" means a manufactured device featuring two pointers that rotate past a set of numerals ranging from 1 to 12.
What type of statistical data is best represented by apie diagram? Illustrate your answer with Example. What conditions must generally be borne in mind while presenting statistical data?
There are 20 qualified applicants for 5 trainee positions in a fast-food management program. How many different groups of trainees can be selected?
How much production capacity should the manufacturer reserve for the last day?
Test whether there is evidence that Abigail's distributors are violating her edict that X = 1000.
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