Question

34 You are checking quality on a part and find out that there are 36 defects out of 10 samples of 100 parts. Which statement is true? Group of answer choices 0.036 is x - double bar 0.036 is p-bar

Answer 1

34.

x = number of defect in a sample

x̄ = mean of number of defect in a sample

x̄ = total defects / no. of samples

= 36/10

x̄ = 3.6 defects per sample

p = proportion of the parts that have defect in the sample

p̂ = proportion of parts that have defect overall (including all samples)

p̂ = total defects / (no. of samples * no. of parts in each sample)

= 36 / (10*100)

p̂ = 0.036

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