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Problem: In the annual report by the Syarikat Ajaysoft Sdn Bhd, the average annually income of project leader is RM49, 000.00. If from a random sample of 625 project leaders, it is computed that the average annual income is RM48, 950.00 and the standard deviation is RM1,000.00, do the hypothesis test on the validity of the report by following steps.
a) State your null and alternative hypothesis.
b) State your test statistics and give reasons why you choose it.
c) Compute your test statistics.
d) State your level of significance and get the critical value from the appropriate table.
e) State your decision based on your test statistic value and critical value.
f) What can you conclude about the validity of the report?
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