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Sagot :
43920 is the lowest amount that a teacher needs to make and still be one of the top 7% earners with a mean of $38,000 and a standard deviation of $4,000
According to information provided to us, the pay for elementary school teachers in a certain nation is generally distributed, with a mean of $38,000 and a standard deviation of $4,000 per year.
To resolve the issue at hand, we shall make use of the normal distribution table. Finding the z-score corresponding to the top 7% or the 93% probability from the normal distribution table (0.93).
The normal distribution table provides us with the 1.48 z-score we need.
We will now solve for the sample score using the z-score formula as follows:
z = x - μ/σ
1.48 = x - 38,000/4000
1.48 × 4000 = x - 38,000
5920 = x - 38000
x = 5920+38000
x = 43920
To learn more about mean:
https://brainly.com/question/20747890
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