Use the given frequency distribution to find the ​(a) class width. ​(b) class midpoints. ​(c) class boundaries

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Q: Suppose Sn is the sum of 48 independent experimental values of the random variable X whose…

A: Given thatConsider,

Q: Find the critical value t(subscript)c for the confidence level c= 0.80 and sample size n = 19

A:

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Q: An article included data from a survey of a random sample of adults living in the United States. Of…

A: n=sample size=1300 X=700

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A: The confidence level is 0.80.

Q: The dataset Beers.csv compares the reaction time of 20 individuals in a driving obstancles course…

A: BeforeAfter6.256.852.964.784.955.573.944.014.855.914.815.346.66.095.335.845.194.194.885.755.756.255.…

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A: Answer Given,The number of observations [n] =…

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A: From the provided information,Confidence level = 98%

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A: Given the data asNameAgeHours Time watching T.VKid 1139Kid 2157Kid 3184Kid 4169Kid 5178Kid 6174Kid…

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A: From the provided information,

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A: The estimated regression equation is .Here  and .

Q: (c) Do the occupancy data for the 120 flights suggest that this scheduled flight is unprofitable?…

A: Given informaton:

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A: Sample sizes n1=57,n2=47Sample means x1=229 ,x2=215

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A: Given data:Frequency        Proportion    61                     0.13    65                     0.14…

Q: Use the given confidence interval to find the margin of error and the sample mean. (13.3,22.9)

A:

Q: Consider the following hypothesis test: Ho : μ > 45 Ha: μ < 45 sample of 36 is used. Identify the…

A: Given hypothesis test H0:sample size =36Level of significance =0.01

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A: The given data is as follows:22, 38, 20, 22, 24, 38

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A: Given,n=9s=4c=0.90 implies Critical value will be given by as follows:

Q: A random sample of 160 car purchases are selected and categorized by age. The results are listed…

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