Answer:
32
Step-by-step explanation:
I did the mathmathics
Using the normal distribution, it is found that 1851 people would have an IQ less than 115.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean
and standard deviation
is given by:

- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
The mean and the standard deviation are given, respectively, by:

The proportion of IQ scores less than 115 is the <u>p-value of Z when X = 115</u>, hence:


Z = 1
Z = 1 has a p-value of 0.8413.
Out of 2200 people:
0.8413 x 2200 = 1851.
More can be learned about the normal distribution at brainly.com/question/27643290
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Answer:
Loss section
Step-by-step explanation:
Given
-- cost
-- revenue
Required
Determine where n = 150 is
To do this, we substitute 150 for n in the given functions





The above shows that the revenue is greater than cost for n = 150.
This implies that, n = 15o is the loss section.
Answer:
0.300 + 0.030 + 0.004
or
0.100 x 3 + 0.01 x 3 + 0.001 x 4