What hypothesis testing procedure should you use to answer these questions? Assume all samples are simple random samples, and assume x = 0.05 if it isn't specified. A manufacturing company claims that 90% of items produced by a certain process are nondefective. An improvement in the process is being considered that they feel will raise the proportion of nondefectives above the current 90%, but costs a considerable amount. A sample of 121 items are produced with the new process and 7 are defective. Is this evidence sufficient (at x = 0.05) to conclude that the method has been improved? One sample z-test for the population mean. Two sample z-test for the population means. One sample z-test for proportions. Two sample z-test for proportions. One sample t-test for the population mean. None of our hypothesis tests fit.
What hypothesis testing procedure should you use to answer these questions? Assume all samples are simple random samples, and assume x = 0.05 if it isn't specified. A manufacturing company claims that 90% of items produced by a certain process are nondefective. An improvement in the process is being considered that they feel will raise the proportion of nondefectives above the current 90%, but costs a considerable amount. A sample of 121 items are produced with the new process and 7 are defective. Is this evidence sufficient (at x = 0.05) to conclude that the method has been improved? One sample z-test for the population mean. Two sample z-test for the population means. One sample z-test for proportions. Two sample z-test for proportions. One sample t-test for the population mean. None of our hypothesis tests fit.
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 4SE: What is the difference between events and outcomes? Give an example of both using the sample space...
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