Students on an algebra proficiency exam

Assignment Help Mathematics
Reference no: EM132027396

The lengths of time taken by students on an algebra proficiency exam (if not forced to stop before completing it) are normally distributed with mean 28 minutes and standard deviation 1.5 minutes.

  1. Find the proportion of students who will finish the exam if a 30-minute time limit is set.
  2. Six students are taking the exam today. Find the probability that all six will finish the exam within the 30-minute limit, assuming that times taken by students are independent. Hint: There is a binomial random variable here, whose value of p comes from part (a).

Reference no: EM132027396

Questions Cloud

How much will the account be worth in 15 years : Assuming an interest rate of 11% compounded quarterly, how much will the account be worth in 15 years?
How much interest was earned overall : When this certificate matures, how much will Marylan have accumulated? How much interest was earned overall?
Determine his minimum payment due on december 1 : Assuming Raul had no new interest, determine his minimum payment due on December 1, his billing date.
Rational expression and equation : Find the product and state the non permissible value of -5a(6ab^2/20b^3c^3) and same for (6x^3/4xy)/(-9x^2/20x^2y^3)
Students on an algebra proficiency exam : The lengths of time taken by students on an algebra proficiency exam (if not forced to stop before completing it) are normally distributed
Find the total vertical distance the ball travels : The height of each bounce is three-fourths the height of the previous bounce. Find the total vertical distance the ball travels before coming to rest.
What will be the coordinates of the image : A triangle has vertices of (0,2), (3,0), (0, -3). If it is dilated with center at the origin, and a scale factor of 2, what will be the coordinates of the image
Projection of x onto the plane w : Let v1 = (0, 3, -1) , v2 = (1, 2, 0) , and let W be the plane spanned by v1 and v2. Consider the function T : R 3 ? R 3 where T(x) = projW x
What is the maximum area possible for the rectangular part : It must have a perimeter of 1300 meters. What is the maximum area possible for the rectangular part.

Reviews

Write a Review

Mathematics Questions & Answers

  Calculate the square root

For any positive number, a, the problem of calculating the square root, va , is often done by applying Newton's method to the function f(x) = x2-a.

  How many adults and how many children went to zoo

The Jurassic Zoo charges $14 for each adult admission and $7 for each child. The total bill for the 266 people from a school trip was $2415. How many adults and how many children went to the zoo?

  In how many different ways can the match be completed

SPORTS In the men's tennis tournament at Wimbledon, two finalists, A and B, are competing for the title, which will be awarded to the first player.

  Discuss the defining property of an ordered pair

The defining property of an ordered pair is that two ordered pairs are equal if and only if their first elements are equal and their second elements are equal.

  Find modernes sales in the fifth year

SALES GROWTH Moderne Furniture Company had sales of $1,500,000 during its first year of operation. If the sales increased by $160,000/year thereafter.

  What is the probability that the shipment will be accepted

Assuming that the breaking strengths are normally distributed, what is the probability that one randomly selected steel bar will have a breaking strength in the range from 241 to 252 pounds per square inch?

  Find size of monthly payments paul will be required to make

PERSONAL LOANS Two years ago, Paul borrowed $10,000 from his sister Gerri to start a business. Paul agreed to pay Gerri interest for the loan at the rate.

  Suppose the mean of the sample

A random sample of 50 employees at a company was obtained. The one-way distance from home to work was recorded for ach employee in the sample. Suppose the mean of the sample was 15.2 miles and the standard deviation was 4.2 miles.

  Find the amount of water r that flows from the tank

Find the amount of water R that flows from the tank during the first 54 minutes. r(t)=307-4t

  Is doug correct explain fully

Doug tells them each that their so-called acceptances were not valid and that their power of acceptance has already terminated. Is Doug correct? Explain fully in an IRAC outline answer.Instructions: Please write the following Hypothetical in an IR..

  Write a linear approximation for the change in pressure

Van der Waal's equation relates the pressure, P, and the volume, V , of a fixed quantity of a gas at constant temperature T .

  Construct a niche overlap graph for six species of birds

Construct a niche overlap graph for six species of birds, where the hermit thrush competes with the robin and with the blue jay.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd