16. In a test in Algebra, you got a score of 82 and you want to know how you fared in comparison with yourclassmates. If your teacher tells you that you scored at the 90th percentile, what does it means?A. It means that 90% of the grades were lower than yours and 10% were higher.B. It means that 90% of the grades were higher than yours and 10% were lower.C. It means that 82% of the grades were lower than yours and 90% were higher.D. It means that 90% of the grades were lower than yours and 82% were higher.17. Which of the following symbols denotes variance of sampling distribution of the sample means?a.b.с.d.18. Statistics is a tool inmaking moneyb. managing datac. decision makingd. forecast makinga.19. The science of statistics is/are which of the following:a. organizing data.b. presenting datac. interpreting datad. a, b, and c.20. If the width of each class interval in a histogram is the same, then the height of the vertical bars for each classinterval equalsthe cumulative frequency polygon.C. the number of class intervals.а.b. the largest value of an observations.D. the probability that fall within the .21. It is used when the sample is not proportion of the population and when there is no system in selecting asample.a. Purposive samplingb. Random samplingc. Non-random samplingd. Quota sampling22. Determine the 95th percentile of normal curve.a. 1.65b. 0.27с. 1.68d. 1.6023. The heights of the male college students are normally distributed with mean 68 inches and standarddeviation of 3 inches. If 80 samples consisting of 25 students each are drawn from the population, whatwould be the expected mean and standard deviation for sampling distribution of the means?с. 60, 1.25а. 60, 0.6b. 60, 0.5d. 60, 1.15

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16. In a test in Algebra, you got a score of 82 and you want to know how you fared in comparison with your classmates. If your teacher tells you that you scored at the 90th percentile, what does it means? A. It means that 90% of the grades were lower than yours and 10% were higher. B. It means that 90% of the grades were higher than yours and 10% were lower. C. It means that 82% of the grades were lower than yours and 90% were higher. D. It means that 90% of the grades were lower than yours and 82% were higher.

16. In a test in Algebra, you got a score of 82 and you want to know how you fared in comparison with your classmates. If your teacher tells you that you scored at the 90th percentile, what does it means? A. It means that 90% of the grades were lower than yours and 10% were higher. B. It means that 90% of the grades were higher than yours and 10% were lower. C. It means that 82% of the grades were lower than yours and 90% were higher. D. It means that 90% of the grades were lower than yours and 82% were higher.

MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

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Section: Chapter Questions

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Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.

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Question

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16. In a test in Algebra, you got a score of 82 and you want to know how you fared in comparison with your
classmates. If your teacher tells you that you scored at the 90th percentile, what does it means?
A. It means that 90% of the grades were lower than yours and 10% were higher.
B. It means that 90% of the grades were higher than yours and 10% were lower.
C. It means that 82% of the grades were lower than yours and 90% were higher.
D. It means that 90% of the grades were lower than yours and 82% were higher.
17. Which of the following symbols denotes variance of sampling distribution of the sample means?
a.
b.
с.
d.
18. Statistics is a tool in
making money
b. managing data
c. decision making
d. forecast making
a.
19. The science of statistics is/are which of the following:
a. organizing data.
b. presenting data
c. interpreting data
d. a, b, and c.
20. If the width of each class interval in a histogram is the same, then the height of the vertical bars for each class
interval equals
the cumulative frequency polygon.
C. the number of class intervals.
а.
b. the largest value of an observations.
D. the probability that fall within the .
21. It is used when the sample is not proportion of the population and when there is no system in selecting a
sample.
a. Purposive sampling
b. Random sampling
c. Non-random sampling
d. Quota sampling
22. Determine the 95th percentile of normal curve.
a. 1.65
b. 0.27
с. 1.68
d. 1.60
23. The heights of the male college students are normally distributed with mean 68 inches and standard
deviation of 3 inches. If 80 samples consisting of 25 students each are drawn from the population, what
would be the expected mean and standard deviation for sampling distribution of the means?
с. 60, 1.25
а. 60, 0.6
b. 60, 0.5
d. 60, 1.15

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