Pizza Deliveries A pizza shop owner determines the number of pizzas that are delivered each day. Number of deliveries X 36 37 38 39 40 Probability PX 0.1 0.2 0.2 0.3 0.2 Find the mean. Round your answer to one decimal place as needed. Mean: μ=   Find the variance and standard deviation. Round your answers to one decimal place as needed. Variance: σ^2=   Standard deviation: σ=   If the manager stated that 42 pizzas were delivered on one day, do you think that this is a believable claim?  Yes   No

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