In a z table of standard normal probabilities, the numbers in the table represent areas under the curve . A) to the right of the z score
B) to the left of the z score
C) between the mean and the given z score

B) to the left of the z score

a z score of 1 (1 sd above mean) is equal to .8413

that the the area to the left

Step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles