(Multiple Choice Questions) (6 marks, 1 Mark Each) 1. Area of the reiection regi

Question

(Multiple Choice Questions) (6 marks, 1 Mark Each) 1. Area of the reiection region depends on... a. size of b. Size of C. Test-Statistic d. Number of values 2. was asked whether they had ever used Afandomlxselectedsapple.of 1000 Rollege,student the drug ecstasy. Sixteen percent 16% or 016) of the 1000 students surveyed said that they had. Which one of the following statements about the number 0.16 is correct? a. It's a sample proportion. b. It's a population proportion. c. It's a margin of error d. It's a randomly chosen number 3. A decision in a hypothesis test can be made by using a P-value a. b. C. d. Critical Value A and B None of the above 4. When carrying out a large sample test of H: ,-10 vs. HaHo > 10 by using a rejection point. we reject H, at level of significance when the calculated test statistic is: a. Less than za b. Less than - Za C. Greater than za/z d. Greater than 5. Sample sizes n estimate p 50, n250 and numbers x115, x25 of successes to find the pooled a. 0.4 b. 0.2 C. 2.0 d. None of the above 6. Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. A random sample of 145 assemblies from team 1 shows 130 acceptable assemblies. A similar random sample of 125 assemblies from team 2 shows 120 acceptable assemblies. The pooled proportion for acceptable assemblies is a. 250

Explanation / Answer

1) Option-A

2) Option-A

3) Option-C

4) Option-D

5) P bar = (15 + 5) / (50 + 50) = 0.2

Option-B

6) pooled estimate = (130 + 120) / (145 + 125) = 250 / 270

Option-A

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