The average Senior High School annual cost of tuition fees for all private schools last year was Php43,700. A random sample of costs this year for 45 private schools indicated that the sample mean was Php45,800 and a sample standard deviation was Php5,600. At 0.01 level of significance, is there sufficient evidence to conclude that the cost increased? Solution: Step 1: State the hypothesis. ?0: _____________________________________________________________ ?1: _____________________________________________________________ Step 2: The level of significance and critical region. ? = ________ and the ????????? = __________ Step 3: Compute for the value of one-sample t test. ????????? = _______ Step 4: Decision Rule. ________________________________________________________________ ___________________________________. Step 5: Conclusion: _______________________
The average Senior High School annual cost of tuition fees for all private schools last year was Php43,700. A random sample of costs this year for 45 private schools indicated that the sample mean was Php45,800 and a sample standard deviation was Php5,600.
At 0.01 level of significance, is there sufficient evidence to conclude that the cost increased?
Solution:
Step 1: State the hypothesis.
?0: _____________________________________________________________
?1: _____________________________________________________________
Step 2: The level of significance and critical region.
? = ________ and the ????????? = __________
Step 3: Compute for the value of one-sample t test. ????????? = _______
Step 4: Decision Rule.
________________________________________________________________
___________________________________.
Step 5: Conclusion:
________________________________________________________________
______________________________________________________________________
______________________________________.
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