Question: Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $216, $184, $35, $92, $144, $175,

Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $216, $184, $35, $92, $144, $175, $11, and $57, respectively. Let y denote the amount spent by a customer on groceries in a single visit. Find:

a. ∑y

b. (∑y)²

c. ∑y²

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