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Mystatlab Homework Answers

MyStatLab Statistics Homework Answers

MyStatLab: MyStatLab is the online homework software and the access code to this software is included with your textbook (edition 13). The access code can be purchased separately at the Ryerson bookstore. It is a course requirement that you to do and submit your homework via myStatLab to earn 5% of the course assessment. You are required to do one module per week using myStatLab.

Each semester, a large number of understudies are required to pass through different MyStatLab tests. What's more, the MyStatLab answers are difficult. As indicated by information and details from My Assignment Help specialists, over 60-70% of students get bad grades in any event one MyStatLab test or MyStatLab Exam each semester. This measurement is very stressing in the event that you on second thought. More than one out of two students fail the test. Truth be told, this is decisively the motivation behind why this article was composed. There is an answer for your concern, and it doesn't include the utilization of the legendary. Get MyStatLab answers key .

MyStatLab questions

Complete CH5 Homework and Quiz in MYSTALAB These are two very easy tasks for someone who is good with stats mathematics. Once you will login to the person portal will provide login details This is done in Pearson MyStatLab.


MyStatLab Answers Online Examples


MyStatLab questions

MystatLab Solution :

Given that mean number of new visitors λ = 2.8

Formula :-

=> for poisson distribution ,
P(x,λ) = (e^(-λ) * λ^x)/x!

a. => P(x = 0) = (e^(-2.8) * 2.8^0)/0!

= 0.0608

=> the probability that zero new visitors will arrive is 0.0608


Q2. Fall 2017 Online STA2023 MyStatLab Homework: Section 9.1 Homework Score: 0

of 1 pt 1013 (3 complete) ▼ Score: 66 67%, 2 of 3 pt 24)9.1.3 Question Help *

The distribution of the scores on a certain exam is N(60,5), which means that the exam scores are Normally distributed with a mean of 60 and standard

MyStatLab questions

a. Sketch the curve and label, on the x-axis, the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations and the mean plus or minus three standard deviations

b. Find the probability that a randomly selected score will be less than 55.

Shade the region under the Normal curve whose area corresponds to this probability of 5 C.

45 55 57.5

(a)

The correct option is: C

The population mean is μ = 60%

The population standard deviation is σ = 5

Construct the graph which indicates the mean and standard deviation.

The normal distribution is a continuous probability distribution that is symmetrical on both sides of the mean and any particular normal distribution is completely specified by the numbers mean and standard deviation.

The empirical rule states that for a normal distribution, nearly all of the data will fall within three standard deviation of the mean that is (68%, 95% and 99.7%)

Fundamentals

The Empirical rule for data sets having a distribution that is approximately bell shaped and the following properties can apply,

About 68% of all values fall within 1 standard deviation of the mean

About 95% of all values fall within 2 standard deviation of the mean

About 99.7% of all values fall within 3 standard deviation of the mean

MyStatLab answers

Part a

The correct graph is,

The empirical rule assumption the normal distribution mean indicates the center line of the graph.

b. What is the probability that a randomly selected score will be less than 557 Using the Empirical Rule, the probability that a randomly selected score will be less than 55 is about Type an integer or a decimal.)

Enter your answer in the answer box and then click Check Answer Clear Al part

(b)

Calculate the probability that a randomly selected score will be less than 55.

According to the Empirical rule the 68% of the area is fall in the between one standard deviation.

Un shaded area = 1- Shaded area

= 1-68%

= 1-0.68

=0.32

Now, calculate the probability that less than 55.

P =(Lessthan55)

=2

= 0.3/2​=0.16​

Part b

The probability that a randomly selected score will be less than 55 is 0.16.

Part a

The correct graph is

MyStatLab answers

Part b

The probability that a randomly selected score will be less than 55 is 0.16.


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