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D. The t-distribution has tails that asymptotic to the 6. When do we use t-distribution instead of normal distribu A. If the sample variance is unknown B. If the population variance is known C. When the sample size is considered small.

D. The t-distribution has tails that asymptotic to the 6. When do we use t-distribution instead of normal distribu A. If the sample variance is unknown B. If the population variance is known C. When the sample size is considered small.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Answer numbers 6 to 10
D. The t-distribution has tails that asymptotic to the horizontal axis 6. When do we use t-distribution instead of normal distribution? A. If the sample variance is unknown B. If the population variance is known C. When the sample size is considered small. D. When the sample size is sufficiently large. 7. In the estimation ofa parameter using the t-distribution, is it possible to replace the population standard deviation, o by the sample standard deviation, s? A. No, because the given sample size is small B. No, because o and s differ by a significant amount C. Yes, because o is unknown and s is a good estimator of o. D. Yes, because o is equal to s when we are estimating parameters 8. What will be the effect on the t distribution curve when we replace o by s? A. The t-distribution curve will become bell-shaped. B. The t-distribution curve will be symmetrical to zero. C. The t-distribution curve will be the same as the normal curve. D. The t-distribution curve will have a lower peak and thicker tails. For numbers 9 to 11, The principal of Mapayapa Integrated National High School claimed that the average salary of their teachers is P24, 000 per month. A random samnple of 15 teachers in the school has a mnean of P23, 220, and a standard deviation of P400. 9. Identify the population mean. A. P24,000 B. P23,220 C. P400 D. 15 10. Identify the sample mean. A. P24,000 B. P23,220 C. P400 D. 15 7.
Transcribed Image Text:D. The t-distribution has tails that asymptotic to the horizontal axis 6. When do we use t-distribution instead of normal distribution? A. If the sample variance is unknown B. If the population variance is known C. When the sample size is considered small. D. When the sample size is sufficiently large. 7. In the estimation ofa parameter using the t-distribution, is it possible to replace the population standard deviation, o by the sample standard deviation, s? A. No, because the given sample size is small B. No, because o and s differ by a significant amount C. Yes, because o is unknown and s is a good estimator of o. D. Yes, because o is equal to s when we are estimating parameters 8. What will be the effect on the t distribution curve when we replace o by s? A. The t-distribution curve will become bell-shaped. B. The t-distribution curve will be symmetrical to zero. C. The t-distribution curve will be the same as the normal curve. D. The t-distribution curve will have a lower peak and thicker tails. For numbers 9 to 11, The principal of Mapayapa Integrated National High School claimed that the average salary of their teachers is P24, 000 per month. A random samnple of 15 teachers in the school has a mnean of P23, 220, and a standard deviation of P400. 9. Identify the population mean. A. P24,000 B. P23,220 C. P400 D. 15 10. Identify the sample mean. A. P24,000 B. P23,220 C. P400 D. 15 7.
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