9.
10.
i.e. the shop's claim is contradicted.
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For problems 9 and 10, a machine shop claims that the measurements of the parts it...
For problems 9 and 10, a machine shop claims that the measurements of the parts it produces are uniform with a standard deviation of 1.3 millimeters. A test sample of 31 parts from the shop has a standard deviation of 1.8 millimeters. 9. Give the null and alternative hypothesis and critical value(s). 10. Give the test statistic and use this to find if this result contradicts the shop's claim at a 10% level of significance.
For problems 9 and 10, a machine shop claims that the measurements of the parts it produces are uniform with a standard deviation of 1.3 millimeters. A test sample of 31 parts from the shop has a standard deviation of 1.8 millimeters. 9. Give the null and alternative hypothesis and critical value(s). 10. Give the test statistic and use this to find if this result contradicts the shop's claim at a 10% level of significance.
there are 4 questions collectively. thanks! For problems 7 and 8, an auto manufacturer claims that the average length of time that one of its cars is owned before it requires a major repair is at least seven years. Assume that a survey of ten owners of the manufacture's ears finds that they went an average of 6 years before a major repair and the sample standard deviation for such time lengths was 18 years. Use the data to test...
For problems 7 and 8, an auto manufacturer claims that the average length of time that one of its cars is owned before it requires a major repair is at least seven years. Assume that a survey of ten owners of the manufacture's cars finds that they went an average of 6 years before a major repair and the sample standard deviation for such time lengths was 1.8 years. Use the data to test the manufacture's claim at a 5%...
For problems 7 and 8, an auto manufacturer claims that the average length of time that one of its cars is owned before it requires a major repair is at least seven years. Assume that a survey of ten owners of the manufacture's cars finds that they went an average of 6 years before a major repair and the sample standard deviation for such time lengths was 1.8 years. Use the data to test the manufacture's claim at a 5%...
An auto manufacturer claims that the average length of time that one of its cars is owned before it requires a major repair is at least seven years. Assume that a survey of ten owners of the manufacture's cars finds that they went an average of 6 years before a major repair and the sample standard deviation for such time lengths was 1.8 years. Use the data to test the manufacture's claim at a 5% significance level. A. Give the...
In a advertisement, a pizza shop claims that its mean delivery time is less than 20 minutes. of A random selection 50 delivery times has a sample mean of 22 minutes and a standard deviation of 2.1 minutes. Is there enough evidence to support the claim at = 0.005. Find: Question 5 The null hypothesis ( H0) 22 min 22 min 20 min 20 min Question 6 The alternative hypothesis ( H0) 22 min 20 min 22 min 20 min...
A surgical clamp manufacturer claims that only 10% of its parts are defective (p = 0.10). Hospital critics claim the defect rate is higher (p > 0.10). Testing of 500 randomly selected parts yields a Z statistic of -4.0. a & b) Write out the null and alternative hypotheses c) Will the computation result in a one- or two-tailed test (on a Bell curve)? d) What does the negative z-score indicate regarding the critical region of the test (on a...
A surgical clamp manufacturer claims that only 10% of its parts are defective (p = 0.10). Hospital critics claim the defect rate is higher (p > 0.10). Testing of 500 randomly selected parts yields a Z statistic of -4.0. a & b) Write out the null and alternative hypotheses c) Will the computation result in a one- or two-tailed test (on a Bell curve)? d) What does the negative z-score indicate regarding the critical region of the test (on a...
Problem 1: A physician claims that joggers' maximal volume oxygen uptake is greater than the average of all adults. A sample of 15 joggers had a mean oxygen uptake of 40.6 millimeters per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the mean oxygen uptake for all adults is 36.7 ml/kg, is there enough evidence to support the physician's claim at a 10% significance level? Assumption: parameter: null hypothesis Ho: alternative hypothesis Hj: test statistic: rejection region: calculated...