Se the following information to answer the neat 3 questions.J In a packing plant

Question

Se the following information to answer the neat 3 questions.J In a packing plant, a machine packs cartons with jars. It is hypothesized that the old machine will pack slower on average (that is, have a higher average time) than the new machine. To test that hypothesis, a researcher collected a sample from both machines and recorded the time each machine took to pack a carton. The following table shows the sample data summary collected from the two machines. Data Summary Machine Sample Size Sample Mean Sample Std Dev New 35 13.80 2.57 5.21 Old 11.70 42

Explanation / Answer

Since p - value is 0.04, any confidence interval which is less than 96% will not contain 0 because in that case, p - value will be less than level of significance and we will reject the null hypothesis.

Hence,

The largest such confidence interval will be 95%.

Option d) is correct.

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