A sample of 113 mortgages approved during the current year showed that 32 were issued to a single-earner family or individual. The historical percentage is 24 percent.

At the .05 level of significance in a right-tailed test, has the percentage of single-earner or individual mortgages risen?

(a-1)H₀:

.24 versusH₁:

> .24. Choose the right option.

1. RejectH₀ifz_calc> 1.645
2. RejectH₀ifz_calc< 1.645

• a
• b

(a-2)Calculate the test statistic.(Round intermediate calculations to 2 decimal places. Round your answer to 4 decimal places.)

Test statistic_________

(a-3)The null hypothesis should be rejected.

True

False

(b)Is this a close decision?

Yes

No

(c)State any assumptions that are required.

a. n < 10 andn(1 ) > 10

b. n < 10 andn(1) < 10

c. n > 10 andn(1 ) > 10

d. n > 10 andn(1 ) < 10

• a
• b
• c
• d