The table shows the time 50 students spent on their homework. Frequency
Time (t) in minutes
0 7
30 27
60 12
90 4
Work out an estimate for the mean time the students spent on their homework.
56.4 minutes

Steve had 48 chocolates but decided to give 8 chocolates to each of his ff coworkers. how many chocolates does steve have left? write your answer as an expression.

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%