The store manager of a local supermarket is interested in determining the relationship between the amount of money spent by customers and the size of their household. Using monthly data from all months in 2018, the following model was estimated: Y = 0.01 + 38.61 X                   Error sum of squares: 521.6 Sum of squares of X: 2323.3   Determine the lower limit of the 99% confidence interval for the slope correct to two decimal places.

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A: Answer Given P[A] =0.4P[B] =0.3P [A and B] =0.02

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Q: Find the range for the following sample data. X: 20 O 12 09 06 05 23 20 15 35 26

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Q: Z is a normally distributed variable with mean μ = 0 and standard deviation σ = 1. Find P(z > 0.82)

A: Z is normally distributed with Mean(μ)=0standard deviation(σ )=1

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A:

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Q: Given this table, find the probability of x les 0 1 2 P(x) 0.50 0.25 0.25 X 0.75 0.25 1 0 0.50

A: Pmf of X isx012P(x)0.500.250.25

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A: Mean()=112standard deviation()=15

Q: P(4) = (Type an integer or a decimal.)

A:

Q: Z is a normally distributed variable with mean μ = 0 and standard deviation σ = 1. Find P(-1 < z <…

A: a normally distributed variable with mean μ = 0 and standard deviation σ =…

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Q: if X is a normal random variable with mean u = 3 and variance 62 = 16, find P(X >3), P(X>-1)

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A: xx21018103632410091018081105611151369869721969378779691030106090010651134225101310261698627430441108…

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