Tech, a manufactuer producing oxygen cable for patient in the hospital, the length of the cable must be 80 centimeter as per requested by the hospital. The production manager claim its average cable length being produced is 80 centimeter. A random sample of 30 cables resulted in x ̅ = 78.50 c.m. and s = 5.2 c.m.. Test at α=0.05 level. Sam, the company owner would like to test that the production manager’s claim is not true.
1. Is this a one-tailed or two-tailed test?
- One-tailed
- Two-tailed
- None of the above
2. Which test is appropriate for this question?
- z-test
- t-test
- None of the above
3.Which of the following is the appropriate alternative hypothesis for Sam?
- HA: µ ≠ 78.5
- H0: µ ≠ 80
- HA: µ ≠ 80
- H0: µ = 80
- None of the above
4. Which of the following is the appropriate null hypothesis for Sam
- HA: µ ≠ 78.5
- H0: µ ≠ 80
- HA: µ ≠ 80
- H0 : µ = 80
- None of the above
5. What is your decision regarding to the hypothesis?
- The manager claim is true
- The manager claim is not true

Answer rating: 100% (QA)

ANSWER HERE IN THIS QUESTION WE HAVE TO CLAIM THAT AVERAGE LENTH OF CABLE MUST BE 80CM SO THAT ME... View the full answer