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lora16 [44]
3 years ago
6

The average lateness for one of the top airline companies is 10 minutes. The variance of the lateness measure is calculated as 9

. An airplane arrived 13 minutes after the stated arrival time. Calculate the z-score for the lateness of this particular airplane.
Mathematics
1 answer:
Soloha48 [4]3 years ago
6 0

Answer:

The z score for the airplane arriving 13 minutes after arrival time is 0.33

Step-by-step explanation:

Using normal distribution,

The average lateness for one of the top airline companies is 10 minutes. So our mean, u = 10

The variance, s of the lateness measure is calculated as 9.

x =13 which stands for arrival time.

Using normal distribution,

z = (x - u)/s

z = (13 - 10)/9 = 3/9 = 0.33

The z score for the airplane arriving 13 minutes after arrival time is 0.33. The probability value of the z score can be found by looking at the Normal distribution table

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