Question: 1) For the given data value, find the standard score and the percentile. A data value 2.5 standard deviations above the mean. z = 0.25;

1) For the given data value, find the standard score and the percentile. A data value 2.5 standard deviations above the mean. z = 0.25; percentile = 59.87 z = -2.5; percentile = 0.62 z = 2.5; percentile = 1.95 z = 2.5; percentile = 99.38 2) Provide an appropriate response. Scores on a test are normally distributed. Which of the following statements is (are) plausible? A: Daniel had a standard score of 1.9 and got an A B: Jon had a standard score of 0.7 and got a D C: Eric had a standard score of -1.6 and got a B D: Raul had a standard score of 0 and got a C A and B A and D A only B and C C and D 3) Find a 95% confidence interval for the true population proportion. In a random sample of 250 births at one hospital, 34% were by Caesarean section. 30.8% to 37.2% 27.7% to 40.3% 33.6% to 34.4% 33.9% to 34.1%

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