Solve An article in the ASCE Journal of Energy Engineering (1999, Vol. 125, pp.59-75) describes a study of the thermal inertia properties of autoclaved aerated concrete used as a building material. Five samples of the material were tested in a structure, and the average interior temperatures (°C) reported were as follows: 23.01, 22.22, 22.04, 22.62, and 22.59. Test that the average interior temperature is equal to 22.5°C using alpha (a) = 0.05.
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An article in the ASCE Journal of Energy Engineering (1999, Vol. 125, pp.59-75) describes a study of the thermal inertia properties of autoclaved aerated concrete used as a building material. Five samples of the material were tested in a structure, and the average interior temperatures (°C) reported were as follows: 23.01, 22.22, 22.04, 22.62, and 22.59. Test that the average interior temperature is equal to 22.5°C using alpha (a) = 0.05.
1.)This problem is a test on what population parameter?
a.Variance/ Standard Deviation
b.Mean
c.Population Proportion
d.None of the above
2.)What is the null and alternative 3 points hypothesis?
a.Ho / (theta = 22.5) , Ha: (0 # 22.5)
b.Ho / (theta > 22.5) , Ha: (0 # 22.5)
c.Ho / (theta < 22.5) , Ha: (theta >= 22.5)
d.None of the above
3.)What are the Significance level 3 points and type of test?
- alpha = 0.05 two-tailed
- alpha = 0.95 two-tailed
- alpha = 0.95 one-tailed
- None of the above
4.)What standardized test statistic will be used?
- Z-score
b.chi-squared score
c.t-score
d.None of the above
5.)What is the standard test statistic?
a.-0.02
b.-0.20
c.-2.00
d.None of the above
6.)What is the Statistical Decision?
- 10.02 12.7761: Do not Reject Ho
- 10.2012.7761: Reject Ho
- 10.2012.776]: Reject Ho
- 12.00 12.7761: Do not Reject Ho
7.)What is the statistical decision 5 points in the statement form?
- With 0.05 level of significance, there is sufficient evidence to support the claim that the average interior temperature is not equal to 22.5.
- With 0.05 level of significance, there is no sufficient evidence to support the claim that the average interior temperature is not equal to 22.5.
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