A watch maker claims that the weekly error in their watches has standard deviation of 1 second. sample of 20 watches yields a sample standard deviation of significance level, do the data support the hypothesis that the standard deviation of the weekly error of the watches exceeds the 1 second claimed by the manufacturer? Formulate and carry ou s = 1.364 seconds. At the 1% the appropriate chi-square test. The null hypothesis is Ho . o = 1 0gnin include answers to a)-d) as in the previous hypothesis tests.

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A: We have to find combined success rate of company selling products.

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Q: Prove the Comparison Test.

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A: GivenMean:-It is the one of the measures of central tendencyMean(x) of a set observations is defined…

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A: From the provided information, Average score of 10 students = 85

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A: Addition of linear equations :  aX + b = c  pX + q = r  Addition :  (a + p)X + (b+q) = (c+r)

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A: Given that, Total number of people = 20+22= 42 Man = 20 Women= 22

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A: Given, a set has 8 number and has median 19. The numbers are arranged in descending order (largest…

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A: We have to solve

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A: Here, The mean of an even number of consecutive integers is 0.5

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A: A poll of 520 citizens of Normal Illinois showed that 59% favored strict enforcement of speed…

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A: For the solution of the problem follow the next step.

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Q: The mean of the data set is 40.Find the value of x.The data set is 30,45,x,40,55,50.

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A: given data  n = 115 x¯ = 50x¯ = ∑xn50 = ∑x115∑x = 5750