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Arada [10]
3 years ago
10

Using the example above as a guide, fill in the missing information. Enter percentage answers to the nearest tenth.

Mathematics
2 answers:
SashulF [63]3 years ago
5 0

Solution: We know that height of trees follows a normal distribution with mean height \mu=60 inches and standard deviation \sigma =12 inches

Now let's fill the missing values as per the normal distribution and the given information.

a0=34.1\% of 500 = 0.341 \times 500

           =170.5 \approx 171

Now, let's find the value of a1. Since the height follows normal distribution with mean 60 and standard deviation = 12. Therefore, we have:

a1=\mu+\sigma = 60+12=72

To find the value of a2, we need to use the empirical rule of normal distribution. According to empirical rule, the area between Mean and 1 standard deviation above mean is 34.1%. Therefore, the value of a2 is:

a2=34.1\%

a3 denotes the area between +1 and +2 (72 to 84 inches). According to empirical rule of normal distribution, the area between one standard deviation above mean and two standard deviation mean is 13.6%.

\therefore a3=13.6\%

And a4=13.6\% of 500=0.136 \times 500=68

Therefore, the complete table is attached here.


IRISSAK [1]3 years ago
3 0

Answer:

72

34

13.6

171

68


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