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The quantity of the sample size has a significant influence on the standard error. Since n is the denominator of the standard error formula, as n increases, the standard error increases. The more data that you have, the more accurate you can be.
Lets say you work at UPS and you're on a delivery schedule. You have a mean delivery time of 3.50 days with a standard deviation of 1.2 days and 100 is the sample size. 0.12 days would be your standard error. If we were to increase that sample size to 225 the standard error is 0.08 days. The standard error went down because of the increase in sample size.
Which of the following sets of data provides the clearest diffrence between the two samples?
What is the probability that a randomly selected student has an ACT Math score less than18? What is the probability that a random sample of 10 ACT test takers had a mean ACT Math score less than 18?
it has been reported that men are more likely than women to participate in online auctions. in a recent survey 65 of
Let A be a nonnegative random variable that is independent of any collection of samples X(t1), . . . , X(tk) of a stationary random process X(t). Is Y(t) = AX(t) a stationary random process?
Results of a statistical survey and analyze processed data and what proportion of homes subscribe to telephone service from Ashland? Would you say this portion is small, medium, or large?
Determine whether the following situations represent a right, left or two-tailed test: In 1997, 43% of Americans 18 years or older participated in some form of charity work.
for a population having a mean of 10 and a variance of 30 find the probability that a sample size of 9 taken at random
Calculation of Mode Variance and Standard Deviation for Alcohol-related Accidents by Youngsters
for a certain musician his favorite brand of guitar picks is far more likely to chip accidentally and become useless
a memory researcher shows each study participant a list of words on a computer with some participants seeing words that
Explain the relationship between sample size and the likelihood of a statistically significant difference between the measured values of two groups.
After a certain candidate announced his intention for running for the premiership of a province, many polls were conducted to assess his chanced for success.
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