P, = Proportion of student making less the 30.

P1 = 5 0.2

25

My= 16

12 = 4 = 0:25 , 4 = 1 – 0.25 20- 75

16

Ho = PI = Pu

Hi = Po # Pu

lived of signcticance *= 0105

Test statistic

0.2 – 0:25

+

0.2…Statistics and Probability

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# Alpha = 0 05department 1 Xbar = $36s = $9sample Size = 25number Of Students

P1 = 5 0.2

25

My= 16

12 = 4 = 0:25 , 4 = 1 – 0.25 20- 75

16

Ho = PI = Pu

Hi = Po # Pu

lived of signcticance *= 0105

Test statistic

0.2 – 0:25

+

0.2…Statistics and Probability