The average farm size in the United States is 444 acres. A random sample of 40 farms in Oregon indicated a mean size of 430 acres, and the population standard deviation is 52 acres. At a = 0.05, can it be concluded that the average farm in Oregon differs from the national average? a) Based on reading the problem, how do we know we are working with a hypotheses test ( Ho and H1)? This question has two possible answers. U Asks us to find (estimate) the % confidence interval of the population (true) mean. DAsks us to find the sample size (how many or how large). Oa is provided. Asks if there is evidence r can we conclude somethine

The average farm size in the United States is 444 acres. A random sample of 40 farms in Oregon indicated a mean size of 430 acres, and the population standard deviation is 52 acres. At a = 0.05, can it be concluded that the average farm in Oregon differs from the national average? a) Based on reading the problem, how do we know we are working with a hypotheses test ( Ho and H1)? This question has two possible answers. U Asks us to find (estimate) the % confidence interval of the population (true) mean. DAsks us to find the sample size (how many or how large). Oa is provided. Asks if there is evidence r can we conclude somethine

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Description: The average farm size in the United States is 444 acres. A random sample of 40 farms inOregon indicated a mean size of 430 acres, and the population standard deviation is 52acres. At a = 0.05, can it be concluded that the average farm in Oregon diff

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher is interested in seeing if the average income of rural families is less than that of urban families. To see if his claim is correct he randomly selects 23 families from a rural area and finds that they have an average income of $69033 with a standard deviation of $591. He then selects 24 families from a urban area and finds that they have an average income of $65076 with a standard deviation of $846. Perform a hypothesis test using a significance level of 0.01 to help him decide. Let the rural families be sample 1 and the urban families be sample 2. The correct hypotheses are: Ho:µ1 µ2(claim) Ho: µ1 2 µ2 HA: H1 < H2(claim) Ho: µ1 = µ2 HA:µ1 # µ2(claim) Since the level of significance is 0.01 the critical value is -2.42 The test statistic is: (round to 3 places) The p-value is: (round to 3 places)
can you answer 26a and b
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Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: Friday the 13th: 10 10 13 11 13 69 11
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