Make sure to do the rounding and double check the answers please. x12 =reject H, or if the test statistic, x x =reject Ho. Otherwise, do not reject Ho.Find the test statistic, x.(Round to two...

Make sure to do the rounding and double check the answers please.

Extracted text: A manager is interested in determining if the population standard deviation has dropped below 138. Based on a sample of n = 19 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 130. Determine the null and alternative hypotheses. O A. Ho: o2 < 138="" на:="" а22="" 138="" о="" в.="" но:="" о2="" 138="" ha:="" o2="" +="" 138="" o="" c.="" ho:="" o2="" 19,044="" ha:="" 02="">< 19,044="" o="" d.="" ho:="" o2="">< 19,044="" ha:="" o2="" 2="" 19,044="" state="" the="" decision="" rule.="" select="" the="" correct="" choice="" below="" and,="" if="" necessary,="" fill="" in="" any="" answer="" boxes="" to="" complete="" your="" choice.="" (round="" to="" four="" decimal="" places="" as="" needed.)="" o="" a.="" if="" the="" test="" statistic,="" x2=""> x12 = reject H, or if the test statistic, x < x="" -="" a/2="reject" ho.="" otherwise,="" do="" not="" reject="" ho="" b.="" if="" the="" test="" statistic,="" x=""> x = reject Ho. Otherwise, do not reject Ho. Find the test statistic, x. (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 138. O B. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 138. OC. Reject Ho. There is sufficient evidence that the population standard deviation is less than 138. O D. Reject Ho. There is insufficient evidence that the population standard deviation is less than 138.