Suppose a random sample of 100 fifth-graders is to be obtained. Without assuming x (the time it takes a fifth-grade student to read a certain passage) is normally distributed, what is the approximate probability that the sample mean reading time is between 1.9 and 2.2 minutes?

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?