Question

Do I reject the null and is there or not sufficient evidence?

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 10% 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 9.9 11.4 8.4 12. 1 4 3 8.3 10.3 9.3 8.8 Assuming that population yields are normally distributed, test the company's claim at the 1% significance level. Click the icon to view the upper critical values of the Student's t distribution. slyn " X-HO X-Ho F <-tn-1 a/2 or reject H, if — San-1a/2 >t-1 X-HO O C. Reject Ho if <-tn-1.a Determine the value(s) for-th-1 -1, or to-102 as appropriate for this test. 3.250, -3.250 (Round to three decimal places as needed. Use a comma to separate answers as needed.)) Calculate the decision statistic. X-HO = - 1.458 (Round to three decimal places as needed.) s/n State the conclusion of this test. Do not reject the null hypothesis. There is sufficient evidence that the yield is not equal to 10%.

Answer 1

Here -.458 < 3.250 coe have to Accept tto -then o) Faal to eject tto. Conclusion: Do not eject the null hypothesis. There is Scufficient evidence that the not Gield is not equal to lo1.