Z-score for 13 = Z-score for 24 = Z-score for 8 = Z-score for 35 = Score: 0 of 5

Question

Z-score for 13 = Z-score for 24 = Z-score for 8 = Z-score for 35 = Score: 0 of 5 pts | 9 of 33 (12 complete) Score: 37.87%, 64 of. 5.1.40 D Assigned Media Question Help A standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard deviation was 5.7. The test scores of four students selected at random are 13, 24, 8, and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 13 is (Round to two decimal places as needed.) 2 Enter your answer in the answer box and then click Check Answer

Explanation / Answer

as we know that zscore =(X-mean)/std deviation

hence z score for 13=(13-21.1)/5.7=-1.42

z score for 24=(24-21.1)/5.7=0.51

z score for8=(8-21.1)/5.7=-2.30

z score for 35=(35-21.1)/5.7=2.44

scores of 8 and 35 are unusual

Related Questions

Navigate

• Browse (All)
• Browse Z
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.