A manufacturer of ball bearings specifies that the diameter of the bearing should be 0.05 millimeters. He samples a lot of 30 bearings and finds out that the mean diameter is 0.03 millimeters. Suppose that the standard deviation of the diameters of the bearing is 0.05 mm., test the claim at 5% level of significance.

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Q: A particular manufacturing design requires a shaft with a diameter of 21.000 ​mm, but shafts with…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: Does the average Presbyterian donate less than the average Catholic in church on Sundays? The 49…

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Q: A particular manufacturing design requires a shaft with a diameter of 24.000 mm, but shafts with…

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Q: A particular manufacturing design requires a shaft with a diameter of 21.000 mm, but shafts with…

A: Press 2ND and VARSChoose normalcdf

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A: Given that.   X~N( μ , ?^2 )   μ=54     , ?=4   Z-score =( x - μ )/?

Q: A manufacturer of ball bearings specifies that the diameter of the bearing should be 0.05…

A: Given : n=30 , X-bar=0.03  , σ=0.05 , μ0=0.05 , α=0.05 Here , we want to test the claim that the…

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Q: A telecommunications company claims that households receive an average of 40 telephone calls per…

A: From the given information, μ=40 calls σ=5 callsn=35x=36α=0.10

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A: Here, X: The diameter of a shaft ~ N(19.004, 0.0042). Then,X~N(19.004,0.0042)⇒Z=X-19.0040.004~N(0,1)

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Q: The mean score in miss smiths 4th grade class was 76, with a standard deviation of 7. Assume the…

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Q: It is claimed that personal vehicle is driven 24500 km per year. Would you agree with this claim if…

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Q: A company which produces batteries claims that the life expectancy of their batteries is 90 hours.…

A: Given that, Population mean (μ) = 90 sample mean (x¯) = 87 sample size (n) = 40 population standard…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: According to the empirical rule, Therfore,

Q: In a certain city, the average 20- to 29-year old man is 69.8 inches tall, with a standard deviation…

A: For man:mean(μ)=69.8standard deviation(σ)=3.0and X=75For woman:mean(μ)=64.3standard…

Q: . For this​ process, what is the proportion of shafts with a diameter between 23.991 mm and 24.000…

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Q: An insurance company wants to know if the average speed at which men drive cars is greater than that…

A: Givenn1=27Mean(x1)=72s1=2.2n2=18x2=68s2=2.5α=1%

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