Flight 202's arrival time is normally distributed with a mean arrival time of 6: 30 p. m. and a standard deviation of 15 minutes. use the eight-part symmetry of the area under a normal curve to find the probability that a randomly chosen arrival time is after 7: 15 p. m. the probability is__

The probability is 0.0015

Step-by-step explanation:

We know that the mean is:

The standard deviation is:

The Z-score is:

We seek to find

The Z-score is:

The score of Z = 3 means that 7:15 p.m. is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

So

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

6.25 grams

step-by-step explanation: