A company selling licenses for new e-commerce computer software advertises that firms using this software obtain, on average during the first year, a yield of 12% on their initial investments. A random sample of 10 of these franchises produced the yields shown below for the first year of operation. 6.8 9.7 11.9 8.8 12.4 5.7 8.2 10.7 9.8 8.6 D Assuming that population yields are normally distributed, test the company's claim at the 5% significance level. Click the icon to view the upper critical values of the Student'st distribution. For this test at the significance level a with sample mean x, hypothesized mean Ho, sample standard deviation s, and sample size n, what is the form of the decision rule? x-H0 >n- 1,a s/ yn O A. Reject Ho if x- Ho .< - tn -1,a s/ yn O B. Reject Họ if x- HO C. Reject Ho if s/ Vn x-HO ->tn - 1,a/2 s/ yn < - tn- 1.g/2 or reject Ho if Determine the value(s) for - t-1.g, th - 1.g, or ±t,-1.g/2 as appropriate for this test. (Round to two decimal places as needed, Use a comma to separate answers as needed.)

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A company selling licenses for new e-commerce computer software advertises that firms using this software obtain, on average during the first year, a yield of 12% on
their initial investments. A random sample of 10 of these franchises produced the yields shown below for the first year of operation.
6.8
9.7
11.9
8.8
12.4
5.7
8.2
10.7
9.8
8.6
Assuming that population yields are normally distributed, test the company's claim at the 5% significance level.
Click the icon to view the upper critical values of the Student's t distribution.
"1: P² L
For this test at the significance level a with sample mean x, hypothesized mean Ho, sample standard deviation s, and sample size n, what is the form of the decision
rule?
X- Ho
A. Reject H, if
s/ Vn
'n- 1,a
X- Ho
B. Reject H, if
< - tn - 1,a
s/ yn
x- HO
C. Reject H, if
s/ yn
x- HO
<---- 1,a/2 or reject Ho if
> tn - 1,a/2
s/ yn
Determine the value(s) for - tn – 1,a» 'n – 1,a'
or ±tn-1
as appropriate for this test.
n- 1,¤/2
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
Transcribed Image Text:A company selling licenses for new e-commerce computer software advertises that firms using this software obtain, on average during the first year, a yield of 12% on their initial investments. A random sample of 10 of these franchises produced the yields shown below for the first year of operation. 6.8 9.7 11.9 8.8 12.4 5.7 8.2 10.7 9.8 8.6 Assuming that population yields are normally distributed, test the company's claim at the 5% significance level. Click the icon to view the upper critical values of the Student's t distribution. "1: P² L For this test at the significance level a with sample mean x, hypothesized mean Ho, sample standard deviation s, and sample size n, what is the form of the decision rule? X- Ho A. Reject H, if s/ Vn 'n- 1,a X- Ho B. Reject H, if < - tn - 1,a s/ yn x- HO C. Reject H, if s/ yn x- HO <---- 1,a/2 or reject Ho if > tn - 1,a/2 s/ yn Determine the value(s) for - tn – 1,a» 'n – 1,a' or ±tn-1 as appropriate for this test. n- 1,¤/2 (Round to two decimal places as needed. Use a comma to separate answers as needed.)
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