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Question:
(a) Suppose that 100 tires made by Bridgestone last on average 21,819 miles with a standard deviation of 1,295 miles. Test the null hypothesis µ = 22, 000 miles against the alternative hypothesis µ < 22, 000 miles at the 5% level of con?dence.
(b) It is decided that H0 is rejected if the sample mean is less than 21,819. Using the same information in part (a) above, except for the 5% level of con?dence, calculate
(i) P(H0 is accepted | H1 is true with µ = 21, 500).(ii) the power of the test.
(c) The results of 100 students who have taken part in examinations on Probability and Statistics during the past few years can be summarised as follows. Out of 42 males, 30 have passed and out of 58 females, only 34 have passed. Test at the 5% signi?cance level whether there is a relationship between gender and success in modules of Probability and Statistics.
Defination,Advantages and Limitation, Proper Management of company,
Suppose that cars pass a certain toll booth at an average rate of 10 cars per minute between the hours of 7 a.m. and 9 a.m. The random variable X counts the number of cars that pas
1. This question has multiple parts. For a distribution of scores with = 82 and standard deviation = 2.5, find the following: (Don't forget to sketch the normal curve to help
#A________variable is a variable whose values are countable.
KINDLY ASSIST ME WITH THIS ASSIGNMENT AND FORWARD IT TO ME BY 31 OCTOBER 2013.
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1. (i) Complaints were made about the level of pollutants in the discharge from a certain factory. The factory refuted the complaints by showing the results of their own analysis
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