I need help finding the value of the test stat. The accounting department analyz
ID: 3055840 • Letter: I
Question
I need help finding the value of the test stat.
The accounting department analyzes the variance of the weekly unit costs reported by two production departments. A sample of 16 cost reports for each of the two departments shows cost variances of 2.4 and 5.5, respectively. Is this sample sufficient to conclude that the two production departments differ in terms of unit cost variance? Use = .10.
State the null and alternative hypotheses.
0: 1 2 Selectgreater thangreater than or equal toequal toless than or equal toless thannot equal toItem 1 2 2
a: 1 2 Selectgreater thangreater than or equal toequal toless than or equal toless thannot equal toItem 2 2 2
Calculate the value of the test statistic (to 2 decimals).
The p-value is Selectless than .02between .02 and .05between .05 and .10between .10 and .20greater than .20Item 4
What is your conclusion?
SelectConclude that the departments differ in terms of unit cost varianceCannot conclude that the departments differ in terms of unit cost varianceItem 5
The accounting department analyzes the variance of the weekly unit costs reported by two production departments. A sample of 16 cost reports for each of the two departments shows cost variances of 2.4 and 5.5, respectively. Is this sample sufficient to conclude that the two production departments differ in terms of unit cost variance? Use = .10.
State the null and alternative hypotheses.
0: 1 2 Selectgreater thangreater than or equal toequal toless than or equal toless thannot equal toItem 1 2 2
a: 1 2 Selectgreater thangreater than or equal toequal toless than or equal toless thannot equal toItem 2 2 2
Calculate the value of the test statistic (to 2 decimals).
The p-value is Selectless than .02between .02 and .05between .05 and .10between .10 and .20greater than .20Item 4
What is your conclusion?
SelectConclude that the departments differ in terms of unit cost varianceCannot conclude that the departments differ in terms of unit cost varianceItem 5
Explanation / Answer
Sol:
Ho: no difference in cost varainces
H1:difference in cost variances.
F=S2^2/S1^2
=larger variance/smaller variance
=5.5/2.4
=2.29
ANSWER:
F=2.29
TEST STATISTIC=2.29
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