Ho : HAS MB Ha : M A > MB f. Is this test right-, left-, or two-tailed? b) HO: p 0.2 This is a test of a single population proportion. Assume the p-value is 0.0935. What type of test is this? Draw the picture of the p-value. Insert picture. C) The mean throwing distance of a football for Marco, a high school freshman quarterback, is 40 yards, with a standard deviation of two yards. The team coach tells Marco to adjust his grip to get more distance. The coach records the distances for 20 throws. For the 20 throws, Marco's mean distance was 45 yards. The coach thought the different grip helped Marco throw farther than 40 yards. Write the information provided use the correct symbols. (Do not solve the question.) d) A sociologist claims the probability that a person picked at random in Times Square in New York City is visiting the area is 0.8410; You want to test to see if the claim is correct. State the null and alternative hypotheses. e) It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per night, on average. A survey of 22 LTCC Intermediate Algebra students generated a mean of 7.24 hours with a standard deviation of 1.93 hours. At a level of significance of 5%, do LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average? The distribution to be used for this test is X - ~ 1. N(7.24, 1.93 22) 2. N(7.24, 1.93) 3. t22 4. t21e) It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per night, on average. A survey of 22 LTCC Intermediate Algebra students generated a mean of 7.24 hours with a standard deviation of 1.93 hours. At a level of signicance of 5%, do LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average? The distribution to be used for this test is X ' - ________________ . ? 1. N(7.24, 1.93 22) 2. N(7.24, 1.93) 3. t22 4. t21 fl A golf instructor is interested in determining if her new technique for improving players' golf scores is effective. She takes four (4) new students. She records their 18-hole scores before learning the technique and then after having taken her class. She conducts a hypothesis test. Player 1 Player 2 Player 3 Player 4 Mean score before 83 78 93 87 class Mean score after 80 80 86 86 class This is which of the following and Why? 1. a test of two independent means. 2. a test of two proportions. 3. a test of a single mean. 4. a test of a single proportion. g) A study is done to determine if Company A retains its workers longer than Company B. Company A samples 15 workers, and their average time with the company is ve years with a standard 2. N(7.24, 1.93) 3. t22 4. t21 1') A golf instructor is interested in determining if her new technique for improving players' golf scores is effective. She takes four (4) new students. She records their 18-hole scores before learning the technique and then after having taken her class. She conducts a hypothesis test. Player 1 Player 2 Player 3 Player 4 Mean score before 83 78 93 87 class Mean score after 80 80 86 86 class This is which of the following and Why? 1. a test of two independent means. 2. a test of two proportions. 3. a test of a single mean. 4. a test of a single proportion. g) A study is done to determine if Company A retains its workers longer than Company B. Company A samples 15 workers, and their average time with the company is ve years with a standard deviation of 1.2. Company B samples 20 workers, and their average time with the company is 4.5 years with a standard deviation of 0.8. The populations are normally distributed. 1. Are the population standard deviations known? 2. Write Hypothesis