Find the expected value of the number of tests taken

Assignment Help Basic Statistics

Reference no: EM1320136

A calculus instructor uses computer aided instruction and allows students to take the midterm exam as many times as needed until a passing grade is obtained. Following is a record of the number of students in a class of 20 who took the test each number of times.

Students	Number of tests
10	1
7	2
2	3
1	4

Find the expected value of the number of tests taken.

Reference no: EM1320136

Questions Cloud

Ramp up your mergers also acquisitions practice : if you were an investment banker, would you ramp up your mergers also acquisitions practice focused on this organization based on these estimates.

Different types of control charts : From the e-Activity, analyze two to three different types of control charts, focusing on which aspects of each control chart would fit well in the industry that you chose to research.

How much are the springs compressed : At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 9 m/s. Then, 24 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 20 m/s. For the cyclist in this 24 s interval,..

Lowland of far southeastern india that borders : Illustrate what is the lowland of far southeastern India that borders the Indian Ocean also contains the city of madras.

Find the expected value of the number of tests taken : Find the expected value of the number of tests taken.

The monkey stops its climb and holds onto the rope : A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..

State the null & alternative hypotheses in words : State the null & alternative hypotheses in words

Required condition for being a probability distribution : Show that it satisfies the required condition for being a probability distribution.

Property tax revenues which suffered in current environment : Identify and explain at least three property tax revenues that have suffered in the current environment.

User Account

All Pages