Using the Standard Normal (z) Distribution Table, what is the area under the standard normal curve between 1.67 and 2.72?

0.0442

0.2563

0.9525

0.6140

What's the difference between: x≥0 and nonnegative integer. ?

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)