Suppose that a customer service center claims that the telephone calls it
receives last 112 seconds on average, with a standard deviation of 9
seconds. if you took a sample of 324 telephone calls, which of the following
mean times would be within the 95% confidence interval?

Two friends went to get ice cream sundaes. they each chose a flavor of ice cream from a list of vanilla and chocolate and toppings from a list of hot fudge, strawberries, sprinkles, peanuts, and whipped cream. use the sets below describing their choices and find c'. let a = {vanilla, chocolate, hot fudge, strawberries, sprinkles, peanuts, whipped cream} let b = {vanilla, hot fudge, sprinkles, whipped cream} let c = {chocolate, hot fudge, peanuts, whipped cream}