In the past, the time for Jeff's journey to work had mean 45.7 minutes and standard deviation 5.6 minutes. This year he is trying a new route. In order to test whether the new route has reduced his journey time, Jeff finds the mean time for a random sample of 30 journeys using the new route. He camies out a hypothesis test at the 2.5% significance level. Jeff assumes that, for the new route, the joumey time has a nomal distribution with standard deviation 5.6 minutes. (a) State appropriate null and alternative hypotheses for the test. (b) Determine the rejection region for the test.

Q: What's the answer for this

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Q: What is the correct answer ? I have to show work.

A: Given Information: Sample size (n) = 22  Mean (u) = 12 Standard deviation (s) = 5.4

Q: How do you find part b I am confused?

A: Given data :  Numbers A set of 25 two digit numbers are listed below. 10 17 20 23 24 28 32 39 42 45…

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Q: Need help! 2 questions

A: Pick the odd one out.

Q: Question attached.

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Q: Help!!! Please help me! Answer correctly

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Q: Your missing the part d solution

A: First three parts are as solved before.

Q: Not correct answer, read the question again!

A: Given Data We have to find the shortest path and taken time as measure. a) Formulate the problem as…

Q: What is i ? Explain.

A: In complex numbers, i represents the imaginary part. The value of i is -1.   So, in case if we end…

Q: Need help with part 3

A: We find inverse of given Matrix

Q: What other ways can I show the result? Thanks.

A: Enter the data in the R studio in the following ways for data frame: Test= c(1,2,3,4,5,6,7,8,9)…

Q: how to do this

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