Question

a. The alternative hypothesis typically ___________.

• corresponds to the presumed default state of nature

• states the probability of rejecting the null hypothesis when it is true

• contests the status quo, for which a corrective action may be required

• states the probability of rejecting the null hypothesis when it is false

b. When conducting a hypothesis test concerning the population mean, and the population standard deviation is unknown, the value of the test statistic is calculated as __________.

• tdf=p−−popo(1−po)n√tdf=p−−popo(1−po)n

• z=p−−popo(1−po)n√z=p−−popo(1−po)n

• tdf=x−−μos/n√tdf=x−−μos/n

• z=x−−μoσ/n√

c. When conducting a hypothesis test concerning the population mean, and the population standard deviation is known, the value of the test statistic is calculated as _________.

• z=p−−popo(1−po)n√z=p−−popo(1−po)n

• tdf=x−−μos/n√tdf=x−−μos/n

• z=x−−μoσ/n√z=x−−μoσ/n

• tdf=p−−popo(1−po)n√

Answer 1

(A) Alternate hypothesis is the hypothesis which is required to test the status quo for which a corrective action may be required.

So, option C is correct

(B)When conducting a hypothesis test concerning the population mean, and the population standard deviation is unknown, the value of the test statistic, then we use t statistics using sample mean (x bar), sample standard deviation s and sample size n

correct formula is  

option C

(C) When conducting a hypothesis test concerning the population mean, and the population standard deviation is known, the value of the test statistic is given as

option C is correct