1. The mean water consumption of households living in Christine Subdivision is 33.5 cubic meters per month. A random sample of 40 households in the same place has a mean water consumption of 30 cubic meters per month with a standard deviation of 8 cubic meters. Formulate an appropriate null and alternative hypotheses. What is the probability of committing a Type I error? Can we conclude that the mean consumption is not 33 cubic meters per month with a confidence level of 95%? Use a one-tailed test. tbris

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budigeib
sd moni nrtsrotudineib
1. The mean water consumption of households living in Christine Subdivision is
33.5 cubic meters per month. A random sample of 40 households in the same place
has a mean water consumption of 30 cubic meters per month with a standard
deviation of 8 cubic meters. Formulate an appropriate null and alternative
hypotheses. What is the probability of committing a Type I error? Can we conclude
that the mean consumption is not 33 cubic meters per month with a confidence level
of 95%? Use a one-tailed test.
1A
lov
bris slo
bsuqmos
boloeje e H isvieldi sons
You Can Do This
he letter of your answer. Write "X" if your answer is not among the choices.
t is the proposed explanation, assertion, or assumption about a population
meter?
sumption
C. argument
pothesis
Transcribed Image Text:Check Your Progress budigeib sd moni nrtsrotudineib 1. The mean water consumption of households living in Christine Subdivision is 33.5 cubic meters per month. A random sample of 40 households in the same place has a mean water consumption of 30 cubic meters per month with a standard deviation of 8 cubic meters. Formulate an appropriate null and alternative hypotheses. What is the probability of committing a Type I error? Can we conclude that the mean consumption is not 33 cubic meters per month with a confidence level of 95%? Use a one-tailed test. 1A lov bris slo bsuqmos boloeje e H isvieldi sons You Can Do This he letter of your answer. Write "X" if your answer is not among the choices. t is the proposed explanation, assertion, or assumption about a population meter? sumption C. argument pothesis
difference between the two means using a two-tailed test with a = 0.01.
strength is 390 MPa. The decision for the extension of the contract with the manufacturer
The project engineer tested 50 steel bars and found out that the mean ultimate tensile
400 Megapascal (MPa) with a variance of 81 MPa were delivered by the manufacturer.
Check Your Progress
an arena, steel bars with a mean ultimate tensile strength of
In building
acapascal (MPa) with a variance of 81 MPa were delivered by the manufacturer.
400 tect engineer tested 50 steel bars and found out that the mean ultimate tensile
on the engineer. Test the hypothesis whether or not there is no significant
depends
rence between the two means using a two-tailed test with a =
%3D
1. What are the appropriate hypotheses for the two-tailed test?
2. What is the test statistic to be used and the reasons for its selection?
3. What is the critical value c?
000
4 What is the value of the test statistic or the computed value?
5. Formulate a conclusion about the given situation.
Iea m
est with Two Sample Means
r test
trative Example 5-8
igert'ho eles
ne data were gathered from the result of testing the effectiveness of two di
ries in increasing the mean sales of a product . Can we conclude that the
ioc based from the mean sales?"
Transcribed Image Text:difference between the two means using a two-tailed test with a = 0.01. strength is 390 MPa. The decision for the extension of the contract with the manufacturer The project engineer tested 50 steel bars and found out that the mean ultimate tensile 400 Megapascal (MPa) with a variance of 81 MPa were delivered by the manufacturer. Check Your Progress an arena, steel bars with a mean ultimate tensile strength of In building acapascal (MPa) with a variance of 81 MPa were delivered by the manufacturer. 400 tect engineer tested 50 steel bars and found out that the mean ultimate tensile on the engineer. Test the hypothesis whether or not there is no significant depends rence between the two means using a two-tailed test with a = %3D 1. What are the appropriate hypotheses for the two-tailed test? 2. What is the test statistic to be used and the reasons for its selection? 3. What is the critical value c? 000 4 What is the value of the test statistic or the computed value? 5. Formulate a conclusion about the given situation. Iea m est with Two Sample Means r test trative Example 5-8 igert'ho eles ne data were gathered from the result of testing the effectiveness of two di ries in increasing the mean sales of a product . Can we conclude that the ioc based from the mean sales?"
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