Pick the correct asnwer and give bried explaination a. A sample of n = 25 is taken from a population with mean =µ, then the mean of all possible sample averages (ẍ) is.... not always the same as µ smaller than µ bigger than µ equal to µ b. In order to increase its sales, a company has improved its business processes. To test that sales have increased, a Statistical Test was conducted. If µ1 represents the average production before the business improvement and µ2 is the average production after the business improvement process, which Alternative Hypothesis is correct to use for the test? Ha : µ1- µ2 <= 0 Ha : µ1- µ2 not equal to 0 Ha : µ1- µ2 <0 Ha : µ1- µ2 > 0 c. A bank manager claims that there has been a change in the waiting time to be served by customer services. Previously, the average waiting time was 15 minutes. The manager's statement can be written in the form of a null hypothesis and its alternatives as follows H0 : µ =15 vs H1: µ<15 H0 : µ =15 vs H1: µ>15 H0 : µ=15 vs H1: µ>15 H0 : µ =15 vs H1: µ ≠15 I make it as one question because its have simple answer
Pick the correct asnwer and give bried explaination
a. A sample of n = 25 is taken from a population with
- not always the same as µ
- smaller than µ
- bigger than µ
- equal to µ
b. In order to increase its sales, a company has improved its business processes. To test that sales have increased, a Statistical Test was conducted. If µ1 represents the average production before the business improvement and µ2 is the average production after the business improvement process, which Alternative Hypothesis is correct to use for the test?
- Ha : µ1- µ2 <= 0
- Ha : µ1- µ2 not equal to 0
- Ha : µ1- µ2 <0
- Ha : µ1- µ2 > 0
c. A bank manager claims that there has been a change in the waiting time to be served by customer services. Previously, the average waiting time was 15 minutes. The manager's statement can be written in the form of a null hypothesis and its alternatives as follows
- H0 : µ =15 vs H1: µ<15
- H0 : µ =15 vs H1: µ>15
- H0 : µ=15 vs H1: µ>15
- H0 : µ =15 vs H1: µ ≠15
I make it as one question because its have simple answer
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