A Campany that manufactores light bulba claims thet its light hulbs last on average of morethan I150 haurs A Somple of 25 bulba menuFactured by this cmpany gave a mean life of 1090 hous nith a alendord deviation of 85 houre. At 5% significonce level, test the manufacturer's claim. a) There is sufficient evidence to support manufacturers claim b) There is sufcient evidence to rejeet manufacturer s claim cJİnsuffinent information is giren to do the problem d) None of the above . of houses in an area is greater than a mean price of $149,750- DA rescarcher nants to test the claim that the mean price #145000 A Somple of 36 houses selected From this orea produced Assume that63#24600.The sisnificance level is 2%.The test velue of z and the critice velue of z are resprctively: pand a) 2.86 and 2.17 b) 4.09 pand 9.6 c) 1-16 and 2.05 d)6.28 and 2.58 6.A researcher ments to estimate the mean age of all Business Week readers ata 99% can fidence Level. It is knomn that the standard deviation fages of all Business Week readers is 9 years. The somple Size that mll yield a maximum en or of estimate mithin 3 yeers SID mean is: b) 97 d)235 7.A vendom sample af Joo cuohmera, who viaited a deportment re,tan average of #77 at ths store Assume Hthat 6=#19. The 97% confidence interval For the population mean is: a) 74.56 to 79.44 as c) 73.89 to 8011 d) 72.88 to 81-12 (page 2)
A Campany that manufactores light bulba claims thet its light hulbs last on average of morethan I150 haurs A Somple of 25 bulba menuFactured by this cmpany gave a mean life of 1090 hous nith a alendord deviation of 85 houre. At 5% significonce level, test the manufacturer's claim. a) There is sufficient evidence to support manufacturers claim b) There is sufcient evidence to rejeet manufacturer s claim cJİnsuffinent information is giren to do the problem d) None of the above . of houses in an area is greater than a mean price of $149,750- DA rescarcher nants to test the claim that the mean price #145000 A Somple of 36 houses selected From this orea produced Assume that63#24600.The sisnificance level is 2%.The test velue of z and the critice velue of z are resprctively: pand a) 2.86 and 2.17 b) 4.09 pand 9.6 c) 1-16 and 2.05 d)6.28 and 2.58 6.A researcher ments to estimate the mean age of all Business Week readers ata 99% can fidence Level. It is knomn that the standard deviation fages of all Business Week readers is 9 years. The somple Size that mll yield a maximum en or of estimate mithin 3 yeers SID mean is: b) 97 d)235 7.A vendom sample af Joo cuohmera, who viaited a deportment re,tan average of #77 at ths store Assume Hthat 6=#19. The 97% confidence interval For the population mean is: a) 74.56 to 79.44 as c) 73.89 to 8011 d) 72.88 to 81-12 (page 2)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
please answer numbers 4,5,6 and 7
Transcribed Image Text:A Campany that manufactores light bulba claims thet its light hulbs last on average of
morethan I150 haurs A Somple of 25 bulba menuFactured by this cmpany gave a mean
life of 1090 hous nith a alendord deviation of 85 houre. At 5% significonce level, test
the manufacturer's claim.
a) There is sufficient evidence to support manufacturers claim
b) There is sufcient evidence to rejeet manufacturer s claim
cJİnsuffinent information is giren to do the problem
d) None of the above .
of houses in an area is greater than
a mean price of $149,750-
DA rescarcher nants to test the claim that the mean price
#145000 A Somple of 36 houses selected From this orea produced
Assume that63#24600.The sisnificance level is 2%.The test velue of z and the critice
velue of z are
resprctively:
pand
a) 2.86 and 2.17
b) 4.09
pand
9.6
c) 1-16
and
2.05
d)6.28 and 2.58
6.A researcher ments to estimate the mean age of all Business Week readers ata 99% can fidence Level.
It is knomn that the standard deviation fages of all Business Week readers is 9 years. The somple
Size that mll yield a maximum en or of estimate mithin 3 yeers
SID
mean is:
b) 97
d)235
7.A vendom sample af Joo cuohmera, who viaited a deportment re,tan average of #77 at ths
store Assume Hthat 6=#19. The 97% confidence interval For the population mean is:
a) 74.56 to 79.44 as
c) 73.89 to 8011
d) 72.88 to 81-12
(page 2)
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