Wednesday

April 16, 2014

April 16, 2014

Posted by **Elise** on Friday, February 17, 2012 at 6:43pm.

a) what percentage of these students have scores in the range 400 to 700?

b) There were about 1000 students with scores in the range 450-650 on the Verbal SAT. About _______ of them had scores in teh range 500 to 600. Fill in blanks. Explain briefly

- Statistics -
**Nancy Jackson Miller**, Saturday, February 18, 2012 at 12:51ama) Need to find P(400 < x < 700)= ?

z = (400 - 550)/100 = -1.5

z =(700 - 550)/100 = 1.5

P(400 < x < 700)= P(-1.5 < z < 1.5)

= 0.8663=86.36%(Ans.)

- Statistics -
**Nancy Jackson Miller**, Saturday, February 18, 2012 at 12:53ama) Need to find P(400 < x < 700)= ?

z = (400 - 550)/100 = -1.5

z =(700 - 550)/100 = 1.5

P(400 < x < 700)= P(-1.5 < z < 1.5)

= 0.8663=86.36%(Ans.)

From: Tutor_Teddy

- Statistics -
**Nancy Jackson Miller**, Saturday, February 18, 2012 at 12:53ama) Need to find P(400 < x < 700)= ?

z = (400 - 550)/100 = -1.5

z =(700 - 550)/100 = 1.5

P(400 < x < 700)= P(-1.5 < z < 1.5)

= 0.8663=86.36%(Ans.)

From: Tutor_Teddy

**Related Questions**

statistics! - 1) Entry to a certain University is determined by a national test...

Statistics - At one university, the students are given z-scores at the end of ...

statistics - the admissions policy at a certain university requires that ...

statistics - the admissions policy at a certain university requires that ...

statistics - Ten members of a fraternity take a statistics course. Here are ...

statistics - below is the test scores for students in a statistics class.80,65,...

statistics - Among the 500 first year students of college, 270 students study ...

MATH - The ratio of graduate students to undergraduate studaent at a certain ...

statistics - Entry to a certain University is determined by a national test. The...

Statistics - 3. A professor is interested in whether there is a difference in ...