A package of 8 AA batteries contains 2 batteries that are defective. A student randomly  select four batteries and replaces the batteries in his calculator.  i. What is the probability that all four batteries work?  ii. What is the mean and variance for the number of batteries that work?

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Q: help corrcect my answer for 4 part question please use diagram thank you

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Q: df(SSTR) = 4, df(SSE) = 15, SST=120 and SSE = 300 Calculate the mean square of treatment MST…

A: given data  df(SSTR) = 4 df(SSE) = 15 SST=120 SSE = 300

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A: Given that: Mean, μ=20

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A: From the given information, n=400 and x=96.

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Q: A particular fruit's weights are normally distributed, with a mean of 217 grams and a standard…

A: Given: μ = 217 grams. σ = 24 grams. n = 19 Formula Used: Z-score = X-μσn

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Q: OBSERVATIONS 1 2 3 4 5 6 7 8 9 10 QUANTITY 28 69 42 32 42 72 66 49 70 60 PRICE 250 400 450 550 575…

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A: Mean(μ)=∑x.P(X)standard deviation(σ)=∑x2.P(X)-(∑x.P(X))2 we know that total probability is equal to…

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