Test of Hypothesis

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1 0.5 points Values of the test statistic that separate the acceptance region from the rejection region are called C standard deviation critical values t-values O samples 2 0.5 points An investigator believes that the mean Verbal SAT score of the first year BS Biology students is less than 520. The standard deviation of scores in this population is 95. The mean of a sample of 26 students is 548. Test the investigator's prediction using an alpha level of 0.05. What type of test statistic is appropriate for this situation? O x - test O f - test z - test O t - test 6 523 words English (United States3 2 points The owner of the coffee vending machine believes that it dispenses 180 ml of coffee. The assistant used a random sample of 29 and found out that the mean is 185 ml with a standard deviation of 12.5 ml. Is the owner correct in his claim at 0.05 level of significance? STEP 1: Claim: The average amount of coffee that the vending machine can dispense is [a]. Ho: The average amount of coffee that the vending machine can dispense is [b]. Ha: The average amount of coffee that the vending machine can dispense is [c]. STEP 2: Type of test: [d] Critical value/s: [e] a = 0.05 STEP 3: What is the computed test value? [f] STEP 4: Decision: [g] STEP 5: Conclusion: [h] (Choose the letter of your answer.) There is between the sample mean and population mean. Thus, the owner is in his claim. [a] choose your answer.. [b] choose your answer. [c] choose your answer- [d] choose your answer. [e] choose your answer. [f] choose your answer. [g] choose your answer. [h] choose your answer. V [a] less than to 180 ml [f] -2.154 equal to 180 ml 2.084 not equal to 180 ml 2.154 more than to 180 ml -1.701 [b] equal to 180 ml [g] Reject Ho more than 180 ml Accept Ha not equal to 180 ml Reject Ha less than 180 ml Accept Ho [c] not equal to 180 ml [h] a significant difference; correct more than 180 ml no significant difference: correct equal to 180 ml no significant difference: incorrect less than 180 ml a significant difference; incorrect [d] Directional (one-tailed) Non-directional(two-tailed) [e] +-1.701 +-2.763 +-2.048 +-2.467 ited States)4 2 points A researcher reports that the average income of system analysts in Makati is P44,000 per month. A sample of 30 system analysts has a mean salary of P45,800 and standard deviation of P5,400. Is there enough evidence to support the claim at a = 0.01? STEP 1: Claim: The average income of system analysts in Makati is [a] P44,000 per month. Ho: The average income of system analysts in Makati is [b] P44,000 per month. Ha: The average income of system analysts in Makati is [c] P44,000 per month. STEP 2: Type of test: [d] Critical value/s: [e] a = 0.01 STEP 3: What is the computed test value? [f] STEP 4: Decision: [g] STEP 5: Conclusion: [h] (Choose the letter of your answer.) A. There is a significant difference between the sample mean and population mean. Thus, there is an enough evidence to support the claim. B. There is no significant difference between the sample mean and population mean. Thus, there is an enough evidence to support the claim. C. There is no significant difference between the sample mean and population mean. Thus, there is no enough evidence to support the claim. D. There is a significant difference between the sample mean and population mean. Thus, there is no enough evidence to support the claim. [a] choose your answer. [b] choose your answer.. [c] choose your answer. [d] choose your answer.. [e] choose your answer.. [f] choose your answer.. [g] choose your answer. [h] choose your answer. v [a] equal to [e] +-1.65 not equal to +-1.96 less than +-2.58 more than +-2.33 [b] less than [f] -1.82 more than 1.83 not equal to 1.82 equal to -1.83 [c] equal to [8] Reject Ha not equal to Accept Ho Accept Ha [d] directional (one-tailed) Reject Ho non-directional(two-tailed) [h] C D. United States)