Multiple choice -normal distribution, Central Limit Theorem
Not what you're looking for?
If a particular batch of data is approximately normally distributed, we would find that approximately:
a. 2 of every 3 observations would fall between ±1 standard deviation around the mean.
b. 4 of every 5 observations would fall between ±1.28 standard deviations around the mean.
c. 19 of every 20 observations would fall between ±2 standard deviations around the mean.
d. All of the above are true.
14. The Tampa International Airport (TIA) has been criticized for the waiting times associated with departing flights. While the critics acknowledge that many flights have little or no waiting times, their complaints deal more specifically with the longer waits attributed to some flights. The critics are interested in showing, mathematically, exactly what the problems are. Which type of distribution would best model the waiting times of the departing flights at TIA?
a. Binomial distribution
b. Poisson distribution
c. Normal distribution
d. Exponential distribution
15. The Central Limit Theorem is important in statistics because.
a. for a large n, it says the population is approximately normal.
b. for any population, it says the sampling distribution of the sample mean is approximately normal, regardless of the sample
size.
c. for a large n, it says the sampling distribution of the sample mean is approximately normal, regardless of the shape of the
population.
d. for any sized sample, it says the sampling distribution of the sample mean is approximately normal.
Purchase this Solution
Solution Summary
The solution provides answers and explanations to multiple choice questions on normal distribution, probability distribution and Central Limit Theorem
Solution Preview
If a particular batch of data is approximately normally distributed, we would find that approximately:
a. 2 of every 3 observations would fall between ±1 standard deviation around the mean.
b. 4 of every 5 observations would fall between ±1.28 standard deviations around the mean.
c. 19 of every 20 observations would fall between ±2 standard deviations around the mean.
d. All of the above are true.
Answer: d. All of the above are true.
2/3 = 66.67%
4/5 = 80.00%
19/20 = 95.00%
Area within ±1 standard deviation= 68.27% which is ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.