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A) Construct the indicated confidence interval for the population mean mu using the t-distribution c=0.95, x-overbar=12.7, s=2.0, n=9
The 95% confidence interval using a t-distribution is ( , )
B) A population has a mean mu=84 and a standard deviation sigma=28. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49.
mu-x=
Sigma-x=
Does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? State the null and alternate hypothesis then give the test statistic and your conclusion..
Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
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The statistics lecturer wanted to find out the relationship between the number of hours spent by students studying for his end of semester exam and their examination results. His calculated constant was 31.78, b1 was 1.67 and r = + .9586.
question a country library in minnesota reported the following number of books checked out in 15 randomly selected
Can you think of an example where the analysis of variance (ANOVA) can be used? How is ANOVA being used in the workplace, or how should it be used?
It is generally known that there is a relationship between height (cm) and weight (kg). Data from a particular study on Irish women to quantify this relationship are given below. Height (cm) 124 135 111 184 203 212 198 165 100 150 179 156. Estimat..
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