Score: 0.14 of 1 pt HVN Score: 86.16% 6.89 of 8 pts 2.5.47 Question Help A certa

Question

Score: 0.14 of 1 pt HVN Score: 86.16% 6.89 of 8 pts 2.5.47 Question Help A certain brand of automobile tire has a mean life span of 3,000 miles and a standard deviation of 2,300 miles. (Assume the life spans of the tres have a bel shaped distribution.) (a) The life spans of three randomly selected tires are 35,000 miles, 38,000 miles, and 32,000 miles. Find the 2-score that corresponds to each ite spar For the life span of 35,000 miles, z-score is Round to the nearest hundredth as needed.) in the Enter your 4 5

Explanation / Answer

= 33000 = 2300

Z = (X - ) /

(a) X = 35000

Z = (35000 - 33000) / 2300 = 0.8696

z-score from table is 0.8077.

(b) X = 38000

Z = (38000 - 33000) / 2300 = 2.1739

z-score from table is 0.9851.

(a) X = 32000

Z = (32000 - 33000) / 2300 = -0.4345

z-score from table is 0.3320.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

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