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Mashutka [201]
3 years ago
7

The results of a common standardized test used in psychology research is designed so that the population mean is 135 and the sta

ndard deviation is 30. A subject earns a score of 198. What is the z-score for this raw score?
z-score=
Mathematics
1 answer:
Ede4ka [16]3 years ago
4 0

Answer:

2.1

Step-by-step explanation:

Mean+z score(Standard deviation)=raw score

Let the z score be z

135+z(30)=198

30z=63

z=2.1

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4 years ago
At the beginning of year 1, Bode invests $250 at an annual simple interest rate of 3%. He makes no deposits to or withdrawals fr
Dennis_Churaev [7]
The initial investment = $250
<span>annual simple interest rate of 3% = 0.03
</span>
Let the number of years = n
the annual increase = 0.03 * 250
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At the beginning of year 2 ⇒ n = 2 ⇒⇒⇒ A(2) = 250 + 1 * 250 * 0.03
At the beginning of year 3 ⇒ n = 3 ⇒⇒⇒ A(2) = 250 + 2 * 250 * 0.03
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</span>
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