1. Which of the following is true of the null and alternative hypotheses? Exactl

Question

1. Which of the following is true of the null and alternative hypotheses? Exactly one hypothesis must be true a. b. both hypotheses must be true It is possible for both hypotheses to be true c. d. It is possible for neither hypothesis to be true 2. The form of the alternative hypothesis can be a. one-tailed b. two-tailed c. neither one nor two-tailed d. one or two-tailed 3. The value set for is known as a. the rejection level b. the acceptance level c. the significance level d. the error in the hypothesis test 4. The ANOVA test is based on which assumptions? I.the sample are randomly selected II. the population variances are all equal to some common variance III. the populations are normally distributed IV- the populations are statistically significant a. All of the above b. II and II only c. I, II, and III only d. I, and III only The variance within samples ($4) for the variances 4, 2, and 6 is equal to a. 5. d. None 6. A regression between foot length (response variable in cm) and height (explanatory variable in inches) for 33 students resulted in the following regression equation: y^ = 10.9 + 0.23 x. One student in the sample was 73 inches tall then the predicted foot length for this student is a. 17.57 cm b. 27.69 cm c. 29 cmm d. 33 cnm

Explanation / Answer

1) Option a) is correct, because for any testing of hypothesis problem we will give the conclusion about null or alternative hypothesis, in this conclusion only one statement is true whether null or alternative hypothesis.

2) option d) is correct, because the alternative hypothesis are two types onetailed and two tailed alternative

3) option c) is correct, because alfa is called level of significance for the testing hypothesis procedure

4) option c) is correct, because samples are selected randomly, for testing f-test poupation variances are equal and also population are from normally distributed.

5) option a) is correct, because the variance within samples for the variances 4,2 and 6 is the average of the variances.

6) option b) is correct, because the estimated value of y at x = 73 is y = 10.9+0.23(73) = 27.69

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.