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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Conduct a full hypothesis testing on the following problem and then choose among the options what best fits the items being asked: Average heart rate for Filipinos is 91 beats/minute with a population standard deviation of 8.7 beats/minute. A group of 24 individuals participated in an aerobics fitness program to lower their heart rate. After six months the group was evaluated to identify if the program had significantly slowed their heart. The mean heart rate for the group was 88 beats/minute. Was the aerobics program effective in lowering heart rate at 5% significance level? Note: Round off the test statistic to 3 decimal places. If two-tailed test is to be applied, the given critical values as options are considered the absolute values. Identify the following: - Alternative Hypothesis: [Select] • Critical Value: [Select] - Test Statistic: [ Select] • Conclusion: [ Select]
Answer D And E
Need answer to question 4.
7. Weight losses of 12 persons in an experimental one-week diet program are given below: 3.0 5.3 0.2 Weight Loss in Pounds 0.2 3.7 3.7 -1.2 5.9 2.0 1.4 1.7 3.6 Do these results indicate that a mean weight loss was achieved? ( m, > 0) (Perform a hypothesis testing with a = 0.05).
1. On the Standford-Binet test, the mean IQ is 100. A class of 21 kindergarten pupils were tested with a resulting mean of 91 and a standard deviation of 6.59. What is the lower bound of the 90% confidence interval of the average IQ of the kindergarten pupils? 2. On the Standford-Binet test, the mean IQ is 100. A class of 21 kindergarten pupils were tested with a resulting mean of 94 and a standard deviation of 6.58. What is the margin of error of the 90% confidence interval of the average IQ of the kindergarten pupils? Note: Round your answer to 4 decimal places.
Use five-step hypothesis testing for each of the following problems. Number each of the five steps. You may use the traditional method or the p-value method. 1) Science fiction novels average 250 pages in length. The average length of 8 randomly chosen novels written by I. M. Wordy was 265 pages in length with a standard deviation of 35. At are Wordy's novels significantly longer than the average science fiction novel? Use five-step hypothesis testing. 2) The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry. Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars): At the 0.01 level of significance, can it be concluded that the average phone bill has…
Consumer Reports stated that the meantime for a Chrysler Concorde to go from 0 to 60 miles per hour in 8.7 seconds. If you want to set up a statistical challenge to claim the average time from 0 to 60 miles per hour is not equal to 8.7 seconds, what would be the alternate hypothesis and type of test? H1: μ≠ 8.7, a right-tailed test b)H1: μ≠ 8.7, two-tailed test c) H1: μ≠ 8.7,left-tailed test
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