The leader of the jeepney drivers’ association claims that the average daily take-home pay of all jeepney drivers in Pasay city is Php 400.00. A random sample of 100 jeepney drivers in Pasay city was interviewed and the average daily take-home pay of these drivers is found to be Php 425. Use a 0.05 level of significance and assume the standard deviation is Php 92.
Ծ = 92 Ẋ = 425 ﬠ = 400 n = 100 level of significance = 0.05
1. State the hypothesis
Ho: u = 400
Ha: u ‡ 400
2. Type of test: Two-tailed test
3. Critical Value
4. Test statistics
5. Reject or accept the null hypothesis
1. State the hypothesis
H0:
Ha:
2. Type of test: Two-tailed test
3. Critical Value
(using t-table)
So, the rejection region for this two-tailed test is
4. Test statistics
5. Reject or accept the null hypothesis
Since 1.96<2.72, . So z is at rejection region.
Thus, should be rejected. The average daily take home pay of all jeepney drivers in Pasay City is different from P400.00
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