17. Doubling the size of the sample will reduce the standard error of the mean to one-half its current value b. a. have no effect on the standard error of the mean double the standard error of the mean mtuce the standard error of the mean to approximately 70% of its current value C.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

Q17

18, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are
(assuming infinite population)
200 and 18
b.
15.
Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and
a.
200 and 2
81 and 18
C.
d.
9 and 2
16. A population has a mean of 300 and a standard deviation of 18. A sample of 144 observations will be taken. The
probability that the sample mean will be between 297 to 303 is (assuming infinite population)
0.9544
0.4332
a.
b.
0.8664
C.
0.0668
d.
17. Doubling the size of the sample will
reduce the standard error of the mean to one-half its current value
b.
a
have no effect on the standard error of the mean
double the standard error of the mean
reduce the standard error of the mean to approximately 70% of its current value
C.
d.
18. A finite population correction factor is needed in computing the standard deviation of the sampling distribution of
sample means
whenever the population is infinite
b.
a.
whenever the sample size is less than 5% of the population size
The correction factor is not necessary if the population has a normal distribution
d.
C.
whenever the sample size is more than 5% of the population size
In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a
particular study. (assuming infinite population)
19. The standard deviation of, known as the standard error of the proportion is approximately
0.5477
b.
a.
0.0547
C.
5.477
d.
54.77
20. Refer to the information in Q19. The probability that the sample proportion (the proportion living in the dormitories)
is between 0.30 and 0.50 is
0.9328
b. 0.4664
a.
C.
0.0336
d. 0.0672
Transcribed Image Text:18, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are (assuming infinite population) 200 and 18 b. 15. Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and a. 200 and 2 81 and 18 C. d. 9 and 2 16. A population has a mean of 300 and a standard deviation of 18. A sample of 144 observations will be taken. The probability that the sample mean will be between 297 to 303 is (assuming infinite population) 0.9544 0.4332 a. b. 0.8664 C. 0.0668 d. 17. Doubling the size of the sample will reduce the standard error of the mean to one-half its current value b. a have no effect on the standard error of the mean double the standard error of the mean reduce the standard error of the mean to approximately 70% of its current value C. d. 18. A finite population correction factor is needed in computing the standard deviation of the sampling distribution of sample means whenever the population is infinite b. a. whenever the sample size is less than 5% of the population size The correction factor is not necessary if the population has a normal distribution d. C. whenever the sample size is more than 5% of the population size In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. (assuming infinite population) 19. The standard deviation of, known as the standard error of the proportion is approximately 0.5477 b. a. 0.0547 C. 5.477 d. 54.77 20. Refer to the information in Q19. The probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50 is 0.9328 b. 0.4664 a. C. 0.0336 d. 0.0672
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman