Question

problem 1
the mean time for problem 1 is \boxed{} minutes.
(type an integer or a decimal.)

Explanation:

Step1: Count the number of data points

For 27: 2 points, 28: 2 points, 29: 3 points, 30: 2 points, 33: 1 point. Total points: \(2 + 2 + 3 + 2 + 1 = 10\)

Step2: Calculate the sum of all data points

Sum = \((27\times2)+(28\times2)+(29\times3)+(30\times2)+(33\times1)\)
= \(54 + 56 + 87 + 60 + 33\)
= \(54+56 = 110\); \(110+87 = 197\); \(197+60 = 257\); \(257+33 = 290\)

Step3: Calculate the mean

Mean = \(\frac{\text{Sum}}{\text{Number of data points}}=\frac{290}{10}=29\)

Answer:

29