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SE=std error/sqrt(sample size)
So in this case:
SE = 50/sqrt(100)
SE = 50/10
SE = 5
The company wants an estimate of potential sales. They launched a test across 100 stores. These 100 stores had average daily sales of 140 units with a standard deviation of 50.
Calculate the 99%, 95%, and 68% confidence intervals for the average number of units anticipated to sell.
1. What is the relationship between the power of a statistical test and decision errors?
Find the point estimate of the percentage of adults who are in favor of this death penalty. Find a 95% confidence interval estimate of the percentage of adults who are in fa- vor of this death penalty.
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assume the readings on thermometers are normally distributed with a mean of 0 degree c and a standard deviation of 1.00
when circuit boards used in the manufacture of compact disc players are tested the long-run percentage of defectives is
Find a 95% confidence interval for the difference between the proportions of unacceptable assemblies from the two teams.
Perform an analysis of variance for the data. Display the computed quantities in an ANOVA table.- Find the value of R2 that would be obtained if you were to fit the linear model in part b to the data.
a. When events A and B are mutually exclusive, then P(A and B) = P(A) + P(B). b. The union of events A and B consists of all outcomes in the sample space that are contained in both event A and event B. c. When two events A and B are independent, the ..
Manufacturing and Product Development Paper towel manufacturers constantly advertise their products' strength, amount of stretch, and softness.
the center of disease control and prevention reported the diastolic blood pressure of adult women in the us are
Investigators report an beta estimate of 0.34 for sodium intake (g/d) associated with hypertension status among a population US nurses aged 40-80 years
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