Examine whether the following sample could have come from a population with mean 15(assume normality):16, 18, 13, 11, 20, 22, 11, 19, 18, 15.Use 95% level of significance.(Given: t0.05,10 = 1.812, t0.05,9=1.833, t0.01, 9=2.821, t0.01,10=2.764) 6.A large organization produces electric bulbs in each of its twofactories. It is suspected that the efficiencies in the factoriesis not alike, thus a test is carried out by ascertaining thevariability of the life of the bulbs produced by each factory.The results are as follows :10Factory AFactory BNo. of bulbs in sample100200Average Life1100900Standard Deviation240220From the above information, determine whether the differencebetween the variability of life of bulbs from each sample issignificant. Use 1% level of significance.(Given that Zo os = ±1.96, Zo01+2.58. Zo os - 1.65,Zo01 = 2.33)

Solution Dear students as per guidelines we answer the first question only when questions are…

Examine whether the following sample could have come from a population with mean 15(assume normality): 16, 18, 13, 11, 20, 22, 11, 19, 18, 15. Use 95% level of significance. (Given: t0.05,10 = 1.812, t0.05,9=1.833, t0.01, 9=2.821, t0.01,10=2.764)

Examine whether the following sample could have come from a population with mean 15(assume normality): 16, 18, 13, 11, 20, 22, 11, 19, 18, 15. Use 95% level of significance. (Given: t0.05,10 = 1.812, t0.05,9=1.833, t0.01, 9=2.821, t0.01,10=2.764)

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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Question

Examine whether the following sample could have come from a population with mean 15(assume normality):

16, 18, 13, 11, 20, 22, 11, 19, 18, 15.

Use 95% level of significance.

(Given: t_0.05,10 = 1.812, t_0.05,9=1.833, t_{0.01, 9}=2.821, t_0.01,10=2.764)

6.
A large organization produces electric bulbs in each of its two
factories. It is suspected that the efficiencies in the factories
is not alike, thus a test is carried out by ascertaining the
variability of the life of the bulbs produced by each factory.
The results are as follows :
10
Factory A
Factory B
No. of bulbs in sample
100
200
Average Life
1100
900
Standard Deviation
240
220
From the above information, determine whether the difference
between the variability of life of bulbs from each sample is
significant. Use 1% level of significance.
(Given that Zo os = ±1.96, Zo01
+2.58. Zo os - 1.65,
Zo01 = 2.33)

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