Grades in a statistics course and an operations research course. Grades in a statistics course and an operations research course taken simultaneously were as follows for a group of students. Are the grades in statistics and operations research related? Use a = 0.01 in reaching your conclusion. What is the P-value for this test? Is […]
Read More »Five samples of a ferrous-type substance are to be used Five samples of a ferrous-type substance are to be used to determine if there is a difference between a laboratory chemical analysis and an X-ray fluorescence analysis of the iron content. Each sample was split into two subsamples and the two types of analysis were […]
Read More »Consider the sugar content in Exercise 9-44. Suppose that the Consider the sugar content in Exercise 9-44. Suppose that the true variance is 2 = 40. How large a sample would be required to detect this difference with probability at least 0.90? Is this the question you were looking for? If so, place your order […]
Read More »Exercise 6-25 describes testing golf balls for an overall distan Exercise 6-25 describes testing golf balls for an overall distance standard. (a) Can you support a claim that means distance achieved by this particular golf ball exceeds 280 yards? Use a = 0.05. (b) What is the P-value of the test statistic computed in part […]
Read More »Consider the water quality data in Exercise 6-24. (a) Do Consider the water quality data in Exercise 6-24. (a) Do these data support the claim that mean concentration of suspended solids does not exceed 50 parts per million? Use a = 0.05. (b) What is the P-value for the test in part (a)? (c) Does […]
Read More »Exercise 6-24 presented data on the concentration of suspended Exercise 6-24 presented data on the concentration of suspended solids in lake water. (a) Test the hypotheses H0: Âľ = 55 versus, use Âľ = 0.05. (b) What is the P-value of the test statistic computed in part (a)? (c) Compute the power of the test […]
Read More »Consider the hole diameter data in Exercise 8-35. Suppose that Consider the hole diameter data in Exercise 8-35. Suppose that the actual standard deviation of hole diameter exceeds the hypothesized value by 50%. What is the probability that this difference will be detected by the test described in Exercise 9-43? Is this the question you […]
Read More »Consider the rivet holes from Exercise 8-35. If the standard Consider the rivet holes from Exercise 8-35. If the standard deviation of hole diameter exceeds 0.01 millimeters, there is an unacceptably high probability that the rivet will not fit. Recall that n = 15 and s = 0.008 millimeters. (a) Is there strong evidence to […]
Read More »Consider the situation of Exercise 10.54. Oxygen consumption in Consider the situation of Exercise 10.54. Oxygen consumption in ml/kg/min was also measured on the nine subjects. It is conjectured that the oxygen consumption should bo higher in an environment relatively free of CO. Do significance test and discuss theconjecture. Is this the question you were […]
Read More »Define X as the number of under filled bottles from Define X as the number of under filled bottles from a filling operation in a carton of 24 bottles. Sixty cartons are inspected and the following observations on X are recorded: Values 0 1 2 3 Frequency 39 23 12 1 (a) Based on these […]
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