RodRod3294 RodRod3294

19-04-2021
Mathematics

contestada

According to a recent study, the mean number of hours college students spent playing video games per month was 22 hours with a population standard deviation of 2 hours. Two weeks before final exams were scheduled to begin, 100 college students were randomly selected. What is the probability that the mean number of hours spent playing video games is less than 21.8 hours

Respuesta :

19-04-2021

Answer:

0.15866

Step-by-step explanation:

Given that:

Mean, m = 22

Standard deviation, s = 2

Sample size, n = 100

P(x < 21.8):

Obtain the Zscore ;

Z = (x - m) ÷s/sqrt(n)

Z = (21.8 - 22) ÷ 2/sqrt(100)

Z = - 0. 2 ÷ 0.2

Z = - 1

P(Z < - 1)

From Z probability calculator :

P(Z < - 1) = 0.15866

Hence, Probability of obtaining a score less than. 21.8 is 0.15866

Answer Link

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

Otras preguntas

A 2.00 kg box slides on a rough, horizontal surface, hits a spring with a speed of 1.90 m/s and compresses it a distance of 10.0 cm before coming to rest. Deter

A physics major is cooking breakfast when he notices that the frictional force between his steel spatula and his Teflon frying pan is only 0.200 N. Knowing the

In air an object weighs 15N. when immersed in water it weighs 12N . when immersed in another liquid it weighs 13N . determine the density of d object and that o

The width of a rectangle is represented by 5 + 2y the lingth is twice as long as the width.What is the perimeter of the rectangle?Select all correct expressions

What is the square root of y^3

Object permanence means that a child can: Think about something that is not present Cannot consider another person's point of view Think only about herse

Ivy is graphing how much money she eams for each hour of babysitting. She finds that the data tends to be linear and draws a line that passes through the point

[tex]2x + 3y = 80 \\ x + y = 37[/tex]IN ELIMINATION METHOD PLZ HELPP!!

A veteran had a VA loan using his full entitlement. He allows another veteran to assume the loan without VA approval. Could he immediately get another VA loan.

Financial Statements prepared on a modified cash basis of accounting would contain items measured on which, if either, of the following bases______________.