Mathematics, 23.04.2021 17:00 zitterkoph
Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected. Select the appropriate response.
A machine dispenses a liquid drug into bottles in such a way that the standard deviation of the contents is 81 milliliters. A new machine is tested on a sample of 24 containers and the standard deviation for this sample group is found to be 26 milliliters. At the 0.05 level of significance, test the claim that the amounts dispensed by the new machine have a smaller standard deviation.
Select the correct test statistic and conclusion based on the null hypothesis.
Test statistic: χχ2 = 2.370. Reject the null hypothesis.
Test statistic: χχ2 = 3.581. Fail to reject the null hypothesis.
Test statistic: χχ2 = 8.367. Reject the null hypothesis.
Test statistic: χχ2 = 2.370. Fail to reject the null hypothesis.
Answers: 3
Mathematics, 21.06.2019 19:40, evarod
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 21.06.2019 20:00, haileyhale5
What are the domain and range of the function f(x)=2^x+1
Answers: 1
Mathematics, 21.06.2019 20:30, meowmeowcow
Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld
Answers: 1
Use the traditional method to test the given hypothesis. Assume that the population is normally dist...
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