The scores of students taking the ACT college entrance examination are normally distributed with a mean µ = 20.1 and a standard deviation σ = 5.8.

a)    A single student is selected at random. Determine the probability that their ACT score was between 18 and 24.

b)    Determine the probability that a simple random sample of 25 students would earn an average score of at least 22.

Posted Date: 3/13/2013 5:48:27 AM | Location : United States

Ask an Expert

Related Discussions:- A single student is selected at random, Assignment Help, Ask Question on A single student is selected at random, Get Answer, Expert's Help, A single student is selected at random Discussions

Write discussion on A single student is selected at random
Your posts are moderated

Write your message here..

Related Questions

Statistics, mean absolue deviation mean absolue deviation

Related rates of differentiation., Related Rates : In this section we wil... Related Rates : In this section we will discussed for application of implicit differentiation.  For these related rates problems usually it's best to just see some problems an

Algebra, simple shapes simple shapes

Adding integers, Do you subtract when you add integers. Do you subtract when you add integers.

Rhjuu, Ask questutfjion #Minimum 100 words accepted# Ask questutfjion #Minimum 100 words accepted#

Complex number 1pi in polar form, Whlie solving complex number 1pi in polar... Whlie solving complex number 1pi in polar form.In book they have taken theta =-pi/4 why not 7pi/4 because the point lie in fourth quadrant and the theta is given by 2pi-angle(alpha

Difference between absolute and relative in the definition, Difference betw... Difference between absolute and relative in the definition Now, let's talk a little bit regarding the subtle difference among the absolute & relative in the definition above.

Velocity of a skydiver (calculus), using v=g/k(1-e^-kt) find the velocity o... using v=g/k(1-e^-kt) find the velocity of the skydiver when k is 0.015

Example of division of fractions, Example of division of fractions: E... Example of division of fractions: Example: (4/5)/(2/9) = Solution: Step 1:             Invert the divisor fraction (2/9) to (9/2). Step 2:             Multip

What is the volume of the frustum, If the areas of the circular bases of a ... If the areas of the circular bases of a frustum of a cone are 4cm 2 and 9cm 2 respectively and the height of the frustum is 12cm. What is the volume of the frustum. (Ans:44cm 2 )