A housing loan corporation states that it sanctions 80% of all housing loans within 7 working days once the verification process is completed. A customer group believes that all housing loans applied to this corporation that are settled within 7 working days is less than 80% of all housing loans. In a sample of 120 housing loan applications, the group found that 92 were settled within 7 working days. State the null and the alternative hypotheses.
H_0: p = 0.8 vs. H_a: p notequalto 0.8
H_0: p = 0.8 vs. H_a: p > 0.8
H_0: p = 0.8 vs. H_a: p lessthanorequalto 0.8
H_0: p = 0.8 vs. H_a: p greaterthanorequalto 0.8
H_0: p = 0.8 vs. H_a: p < 0.8
Find the point estimate of the population proportion.
0.80
0.23
0.77
0.50
0.20
Calculate the value of the test statistic.
-0.933
0.913
0.933
-0.913
-0.863

a)

Answer : d)

Null hypothesis:-H₀ : p =0.8

Alternative Hypothesis :H₁: p < 0.8

b)

Answer : c)0.77

point estimate of the population proportion= 0.77

c)

Answer : e) -0.863

Step-by-step explanation:

step(i):-

Given Population proportion 'p' =80% = 0.80

Given   a sample of 120 housing loan applications, the group found that 92 were settled within 7 working days.

Sample proportion or point estimation

Null hypothesis:-H₀ : p =0.8

Alternative Hypothesis :H₁: p < 0.8

Step(ii):-

Test statistic

population proportion p =0.8

                                 q = 1-p = 1-0.8 =0.2

     Z = -0.863

|Z| = | -0.863| = 0.863 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

. A customer group believes that all housing loans applied to this corporation that are settled within 7 working days is equal to the 80% of all housing loans.

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