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- 1. Multiple Choice
These symbols represent the mean and standard deviation for which of the following distributions?The PopulationThe SampleThe Sampling Distribution - 2. Multiple Choice28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. What does 50 represent?nPphatstandard deviation
- 3. Multiple ChoiceThese symbols represent the mean and standard deviation for which of the following distributions?The PopulationThe SampleThe Sampling Distribution
- 4. Multiple ChoiceAt a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?78% is a population and 72% is a sample.72% is a population and 78% is a sample78% is a parameter and 72% is a statistic72% is a parameter and 78% is a statistic
- 5. Multiple ChoiceThe Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true.
Calculate the standard deviation of the sampling distribution.0.01160.01170.01180.0119 - 6. Multiple ChoiceThe sampling distribution of a statistic is...Using repeated samples and finding a probabilitityThe distribution of values taken by a statistic in all possible samples of the same sample size from the same populationThe way that sample results differe from each otherthe distribution of values in a sample of size n
- 7. Multiple ChoiceIf you had to choose a "best statistic" to describe a population, which of the following would be best.low bias, high variabilityhigh bias, high variabilitylow bias, low variabilityhigh bias, low variability
- 8. Multiple ChoiceAt a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?78% is a population and 72% is a sample.72% is a population and 78% is a sample78% is a parameter and 72% is a statistic72% is a parameter and 78% is a statistic
- 9. Multiple ChoiceThe Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true.
Calculate the standard deviation of the sampling distribution. (Check to see if the 10% condition is met first)0.01160.01170.01180.0119 - 10. Multiple Choice
53.2% of applicants are accepted into UConn. In a sample of 100 UConn applicants, 45 of them were accepted. What is the parameter?
All UConn applicants.
The 100 applicants in the sample.
53.2% acceptance rate.
45% of accepted in sample.
- 11. Multiple Choice
28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. (The sample proportion is 15/50 or .3) What is the probability of getting a sample of size 50 that has 15 or more students who believe Monday will be a snow day?
0.376
Cannot be determined because the distribution of the sample proportion of samples of size 50 is not normal
0.624
0.99999
- 12. Multiple Choice
78% of flights on major airlines arrive on time. A random sample was taken of 100 flights.
Find the probability that more than 70% of the 100 randomly selected flights are on time.
0.5077
0.0267
0.9999
0.9733
- 13. Multiple ChoiceWhat does this symbol represent?population proportionparametersample proportionpopulation sample
- 14. Multiple ChoiceWhat does this symbol represent?standard errorstandard deviation of the sample proportionsstandard deviation of a parameterstandard deviation of the population
- 15. Multiple ChoiceWhat does this symbol represent?parametersample proportionparameter of a populationpopulation proportion
- Answer choicesTagsAnswer choicesTags