(i) If the confidence coefficient is 0.90, the significance level (i,e, d) is (i
ID: 1129761 • Letter: #
Question
(i) If the confidence coefficient is 0.90, the significance level (i,e, d) is (ii) If the population variance is not known, which of the formula we will use for margin of (b) ± toj2sy where sx = sx /fi (c) R ±za/2s8 where syssx/Vn 2. Which of the following is a r test statistic? a. b. 3. If a hypothesis is rejected at a 1% level of significance, it will also not be rejected at the 5% level always be rejected at the 5% level sometimes be rejected at the 5% level d. Not enough information is given to answer this question.. 4. I the sample proportion is 0.5, someone calculates the margin of error for you whic 5. When the significance level is 0.01, the value of za/zis 6. Which of the following does not need to be known in order to compute the p-value 0.2. What is your interval estimate? a. knowledge of whether the test is one-tailed or two-tailed b. the level of significance the value of the test statistic none of the above is correct. C. d. 7. A Type I error is committed when we reject a null hypothesis that is true. a. b. we don't reject a null hypothesis that is true. we reject a null hypothesis that is false. we don't reject a null hypothesis that is false. c. d. 8. The power of a test is measured by its capability of a. b. c. d. rejecting a null hypothesis that is true. not rejecting a null hypothesis that is true. rejecting a null hypothesis that is false. not rejecting a null hypothesis that is false.Explanation / Answer
1.i) Since the confidence coefficient is 0.90, the significance level is 1-0.90 = 0.10 = 10%.
Ii) the correct answer is: c)
Reason: when the population variance is unknown we estimate it with the sample variance sx.
P.S. As per Chegg's policy if nothing is mentioned then only the first question is to be answered.
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