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  3. you may need to use the appropriate appendix table

You may need to use the appropriate appendix table or technology to answer this question...

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You may need to use the appropriate appendix table or technology to answer this question The reliability of two types of machines used in the same manufacturing process is to be tested The first machine failed to operate correctly in 108 out of 360 trials while the second t operate correctly in 66 out of 300 trials Let d Machine 1 Machine 2 a Give a point estimate of the difference between the population proportions of these machines Round your answer to four decimal places b Calculate the pooled estimate of the population proportion Round your answer to four decimal places c Carry out a hypothesis test to check whether there is a statistically significant difference in the reliability for the two types of machines using a 0 10 level of significance O We do not reject Ho There is no significant difference O We do not reject Ho There is a significant difference We reject Ho There is no significant difference We reject Ho There is a significant difference

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