Let X be the number of flaws in a car paint job, and assume X ~ Poi(5.30). If there are 5 freshly painted cars, what is the mean number of flaws (correct to 2 decimal places)?
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Let X be the number of flaws in a car paint job and assume X ~ Poisson(0.57). If there are 5 freshly painted cars, what is the mean number of flaws?
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The table below summarizes the number of surface flaws found on the paintwork of new cars following their inspection after primer paint was applied by a new method. Part a) Find the mean number of flaws per car. Please give your answer to two decimal places. The mean number of flaws per car is: Part b) Find the variance of the number of flaws per car. Please give your answer to two decimal places. The variance of the number of flaws per car is:
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The table below summarizes the number of surface flaws found on the paintwork of new cars following their inspection after primer paint was applied by a new method. Note: You are not given proportions/probabilities in this table but frequencies. So you have an additional step to take before you can calculate the mean and variance. Part a) Find the mean number of flaws per car. Please give your answer to two decimal places. The mean number of flaws per car is: 2.49 Part b) Find the variance of the number of flaws per car. Please give your answer to two decimal places. The variance of the number of flaws per car is: 2.30
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