The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. Speed (mph) Frequency 50−54 1 55−59 4 60−64 5 65−69 10 70−74 7 75−79 8

Q: If the readings are 23 4 the variance is-----

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A: given samples: n=12 79, 82, 92, 84, 89, 95, 79, 82, 85, 87, 75, 79 HERE, Mean(x̄)=Σx/n= 1008/12 = 84…

Q: • Consider a significant relationship between weight (x) and chest size(y) of all infants, Given:…

A: We have given that,  ΣX = 67.48, ΣY = 266.7, ΣX2 =547.20, n = 10 ΣY2 = 7980.83, ΣX*Y = 2043.14

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A: Find  E(X), V(X) and P(4.5< X<7.5)=?

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Q: 90 85 75 76 81 76 75 76 76 96 89 88 73 81 93 76 76 96 89 88 73 81 89 74 74 74 76 86 75 96 79 73 86…

A: x x2 90 8100 85 7225 75 5625 76 5776 81 6561 76 5776 75 5625 76 5776 76 5776 96…

Q: If a die is tossed, then the occurrence of side one (1) and side four (4) are two events that:…

A: If a die is tossed, then the occurrence of side one (1) and side four (4) are two events that:

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Q: Operational Statistics Student reimbursable breakfasts - 265 Student reimbursable lunches - 349…

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A: The formula to compute the effect size is, η2=SSbetweenSStotal

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Q: Q3: The average number of bicycle accidents at on the road is 5 per week. 1- What is the probability…

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Q: What percentage of people surveyed live with 6 or less people? O a. 87% O b. 97% O c. 3% O d. 13%

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A: Given that  Margin of error =E =1%=0.01 95% confidence.

Q: . Suppose two classes achieved the following grades on a math test, Class A: 64, 70, 73, 77, 85,…

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Q: Let X= Ucy) out of standard er dere d unierm and Y= Uc5) out of

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Q: following the past several days. What is the median number of birds to visit that feeder? 6, 97, 4,…

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Q: What is an outlier?

A: We have to describe the outlier. Outlier can be present in any dataset.

Q: The following is the frequency distribution for the speeds of a sample of automobiles traveling on…

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted.

Q: The following items represent the number of birds observed at a given feeder over the past several…

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A: What do standard deviation ,range,and IQR  tell us about a data set  ?

Q: 12. Which of the following is a Type I error? A. Ho is true; reject Ho. B. Ho is false; reject Ho.…

A: 12) The type I error is the probability of rejecting the null hypothesis when it is actually true.

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Q: The standard normal curve is a normal probability distribution that has a mean of 1 and standard…

A: standard normal distribution:-x~N(μ,σ2) then z=x-μσ~N(μ=0,σ2=1)               ~N(0,1)is called…