A local high school track team claims that the average time it takes a member of their team to run one mile is 6.75 minutes, with a standard deviation of 1.25 minutes. Hank, a member of the track team, ran one mile in 6.5 minutes. Given that the data is approximately normal, standardize the times and find the area under the normal curve above the standardized time.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

2 1/2 feet

step-by-step explanation:

we need to divide the number of toy dinosaurs, 156, by the number of brothers, 4:

in order to estimate, we can use compatible numbers:

156 ÷ 4

  ↓

160   ÷ 4 = 40        

the correct answer is a).