tid-1643574478 MATH 1127 Quiz: Chapter 5 Quiz This Question: 5 pts to 11055 7 of

Question

tid-1643574478 MATH 1127 Quiz: Chapter 5 Quiz This Question: 5 pts to 11055 7 of 20 o (a) What percent of the SAT verbal scores are less than 650? the mean is 506 and the standard deviation is 107 Assume the variable x is normally distributed (b) I" 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? (a) Appro armately¢%ofthe SAT verbucores are less han 650 Round to two decimal places as needed.) b) You would expect that approximately L-SAT ve tal scores would be greater than 525 (Round to thie nearest whole number as needed ) More Type here to search

Explanation / Answer

a) P( X<650)

= P(Z<(650-506)/107)

= 91.08%

So, answer is 91.08%

b) P( X>525)

= P(Z>(525-506)/107)

= 0.42953

we would expect no of = 0.42953*1000 = 430

So, answer is 430

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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