Dave drives to work each morning at about the same time. His ...

[luminitza]

Dave drives to work each morning at about the same time. His commute time is normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes.
 
  The percentage of time that his commute time exceeds 58 minutes is equal to the area under the standard normal curve that lies to the ___ of ___.
  A) right, 2.4 B) left, 1.2 C) right, 12 D) left, 2.4

Question 2

A researcher wishes to estimate the proportion of all drivers who exceed the speed limit on a certain stretch of road where accidents frequently happen. Obtain a sample size that will ensure a margin of error of at most 0.
 
  022 for a 92 confidence interval.
  A) 20 B) 904 C) 35 D) 1582

[cuttiesgirl16]

Answer to Question 1

A

Answer to Question 2

D

[luminitza]

Gracias!

[nguyenhoanhat]

Excellent