I WANT A FILIPINO TUTOR TO ANSWER THIS.

TOPIC: FORMULATING APPROPRIATE NULL AND ALTERNATIVE HYPOTHESES ON A POPULATION MEAN.

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Identifying Appropriate Test Statistics Involving Population Mean Directions: Choose the best answer to the given questions or statements. 1. If the variance is known, what test statistic is appropriate? A. t-test C. two-tailed test B. z-test D. one-tailed test 2. One-sample t-statistic is used instead of one-sample z-statistic when A. H is known. C. u is unknown. B. o is known. D. o is unknown. 3. Based on the Central Limit Theorem, when the sample (n) is extremely large and the variance is unknown, what is the statistical test to be used? A. t-test C. two-tailed test B. z-test D. one- tailed test 4. Which of the following is NOT a consideration in using z-test/statistic? A. Variance is known. B. Sample standard deviation is known. C. The population mean is less than 30. D. Population standard deviation is known. 5. What appropriate tool is applicable if the population is normal, sample standard deviation is known, and sample is less than 30? A. t-test C. normal test B. z-test D. Central Limit Theorem 6. Which of the following symbols is NOT needed when t-test is used in computing values? A. n B. H C. a D. s10. The supervisor of a certain company claimed that the mean workday of his workers is 8.3 hours per day. A sample of 20 workers was taken and it was found out that the mean workday is 8 hours with standard deviation of 1 hour. At 0.01 level of significance, is the mean workday less than 8.3 hours? What test statistic is to be used in the given problem? A. z-test C. right-tailed test B. t-test D. left-tailed test 1 1. Based on the problem in no. 10, 8.3 hours is A. o B. H C. f D. S 12. A leader of an association of jeepney driver claims that the average daily take-home pay of all jeepney drivers in Caloocan is P350.00. A random sample of 100 jeepney drivers in Caloocan was interviewed and the take- home pay was found to be #420.00. If 0.05 significance level was used to find out whether the average take home pay is different from P350.00 and population variance was assumed to be P92.00, what is the appropriate test statistic? A. t-test C. left-tailed test B. z-test D. right-tailed test11. On average, the household electricity consumption in the country was about 248.1-kilowatt hours in 2015. Electricity was used primarily for lighting purposes, cooking, recreation, and space cooling. Which inequality symbols are correct (=, #, 2, ) for the null and alternative hypotheses: Ho: / _ 248.1 Ha: ! _ 248.1? A. =,> B. C. =,# D. S.Z 12. Which is the correct alternative hypothesis for one-tailed test? A. = 25 B. | # 25 C. H 2 25 D. H P116, 714.00 D. Ho: u = P116, 714.00, Ha: H