Initial Knowledge Check Question 2
A retail shop accepts only cash or checks. Suppose that 68% of its customers carry cash, 56% carry checks, and 71% carry ca
the probability that a randomly chosen customer at the shop is carrying both cash and checks?
Write your answer as a decimal (not as a percentage). (If necessary, consult a list of formulas.)
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The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.