(a) Using the income midpoints x and the percent of super shoppers, do we have a valid probability distribution? Explain.
Yes. The events are distinct and the probabilities sum to 1.
Yes. The events are distinct and the probabilities do not sum to 1.
No. The events are indistinct and the probabilities sum to 1.
No. The events are indistinct and the probabilities sum to more than 1.
Yes. The events are indistinct and the probabilities sum to less than 1.
(b) Use a histogram to graph the probability distribution of part (a). (Select the correct graph.)
(c) Compute the expected income μ of a super shopper (in thousands of dollars). (Enter a number. Round your answer to two decimal places.)
μ =
thousands of dollars
(d) Compute the standard deviation σ for the income of super shoppers (in thousands of dollars). (Enter a number. Round your answer to two decimal places.)
σ =
thousands of dollars
“Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!”
What Students Are Saying About Us
.......... Customer ID: 12*** | Rating: ⭐⭐⭐⭐⭐"Honestly, I was afraid to send my paper to you, but splendidwritings.com proved they are a trustworthy service. My essay was done in less than a day, and I received a brilliant piece. I didn’t even believe it was my essay at first 🙂 Great job, thank you!"
.......... Customer ID: 14***| Rating: ⭐⭐⭐⭐⭐
"The company has some nice prices and good content. I ordered a term paper here and got a very good one. I'll keep ordering from this website."
