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Finite Population Sampling: Standard error and variability

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Wize University Statistics Textbook > Sampling Distribution

Finite Population Sampling

3 Activities

The standard error of the sample mean measures the variability of the
More Finite Population Sampling Questions:
Drawing From a Finite Population
The Pogs Fan Club only has 150 members. The number of pogs a member owns is normally distributed with a mean of 265 and standard deviation of 35. What is the probability of selecting a random sample of 10 members with a sample mean of 280 or more?
Statistical sampling
The standard deviation of a population distribution is 6 times larger than the standard deviation of the sample mean. Find the sample size.
Population Sampling: Confidence Interval
Bob, a second-year student at Twin Pines University, is not very good at statistics. He wishes to infer about the average starting salary of recent graduates at Twin Pines University. His sample included 12 friends, all recent graduates, and it revealed a mean of $55,000. His 90% confidence interval is [39,116, 80,884].
Bob reports: "We conclude that 90% of recent graduates at Twin Pines University earn between $39,116 and $80,884."
List everything that is wrong about his statement. (Check all that applies.)