Responder
The score of 6 has the highest relative position.
Solución
To determine which score indicates the highest relative position, we can calculate the z-scores for each of the given scores. The z-score is calculated using the formula:
\[
z = \frac{(X - \mu)}{\sigma}
\]
where:
- \(X\) is the score,
- \(\mu\) is the mean,
- \(\sigma\) is the standard deviation.
Let's calculate the z-scores for each of the three scores provided.
### (a) Score of \(3 \cdot 2\) on a test with mean 4.6 and standard deviation 1.5
1. Calculate \(X\):
\[
X = 3 \cdot 2 = 6
\]
2. Calculate the z-score:
\[
z_a = \frac{(6 - 4.6)}{1.5}
\]
### (b) Score of 32.630 on a test with mean 800 and standard deviation 200
1. Calculate the z-score:
\[
z_b = \frac{(32.630 - 800)}{200}
\]
### (c) Score of 43 on a test with mean 50 and standard deviation 5
1. Calculate the z-score:
\[
z_c = \frac{(43 - 50)}{5}
\]
Now, let's calculate these z-scores.
Calculate the value by following steps:
- step0: Calculate:
\(\frac{\left(43-50\right)}{5}\)
- step1: Remove the parentheses:
\(\frac{43-50}{5}\)
- step2: Subtract the numbers:
\(\frac{-7}{5}\)
- step3: Rewrite the fraction:
\(-\frac{7}{5}\)
Calculate or simplify the expression \( (6 - 4.6) / 1.5 \).
Calculate the value by following steps:
- step0: Calculate:
\(\frac{\left(6-4.6\right)}{1.5}\)
- step1: Remove the parentheses:
\(\frac{6-4.6}{1.5}\)
- step2: Subtract the numbers:
\(\frac{1.4}{1.5}\)
- step3: Convert the expressions:
\(\frac{\frac{7}{5}}{\frac{3}{2}}\)
- step4: Multiply by the reciprocal:
\(\frac{7}{5}\times \frac{2}{3}\)
- step5: Multiply the fractions:
\(\frac{7\times 2}{5\times 3}\)
- step6: Multiply:
\(\frac{14}{15}\)
Calculate or simplify the expression \( (32.630 - 800) / 200 \).
Calculate the value by following steps:
- step0: Calculate:
\(\frac{\left(32.63-800\right)}{200}\)
- step1: Remove the parentheses:
\(\frac{32.63-800}{200}\)
- step2: Subtract the numbers:
\(\frac{-767.37}{200}\)
- step3: Convert the expressions:
\(\frac{-\frac{76737}{100}}{200}\)
- step4: Multiply by the reciprocal:
\(-\frac{76737}{100}\times \frac{1}{200}\)
- step5: Multiply the fractions:
\(-\frac{76737}{100\times 200}\)
- step6: Multiply:
\(-\frac{76737}{20000}\)
Now that we have calculated the z-scores for each score, let's summarize the results:
### (a) Score of \(6\)
\[
z_a = \frac{(6 - 4.6)}{1.5} = 0.9333 \quad (\text{approximately } 0.93)
\]
### (b) Score of \(32.630\)
\[
z_b = \frac{(32.630 - 800)}{200} = -3.83685 \quad (\text{approximately } -3.84)
\]
### (c) Score of \(43\)
\[
z_c = \frac{(43 - 50)}{5} = -1.4
\]
### Conclusion
- \(z_a \approx 0.93\)
- \(z_b \approx -3.84\)
- \(z_c \approx -1.4\)
The highest z-score is \(0.93\) from score (a). Therefore, the score of \(6\) indicates the highest relative position among the three scores.
Respondido por UpStudy AI y revisado por un tutor profesional

Explicar

Simplifique esta solución