This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: P Z ≤ = 1 – 0.8413 = 0.1587 Thus, the expected number of students that are greater than 6 feet tall = 1200*0.1587 = 190.44 = 191 b) Also, P[Height of a Student is between 5 feet and 6 feet] = P[Height of a Student is between 60 inches and 72 inches] = P [ 60 < X < 72] = 60 67 67 72 67 5 5 5 X P < < = P [ 1.4 < Z < 1] = P [ Z < 1] – P [ Z < 1.4] = 0.8413 – 0.0808 = 0.7605 Thus, the expected number of students that are between 5 feet and 6 feet = 1200*0.7605 = 912.6 = 913 Note that using MS Excel P[Z<a] can be calculated using the Excel formula =NORMSDIST(a)...
View
Full
Document
 Spring '08
 LaniS
 Normal Distribution

Click to edit the document details