Question
Asked Dec 12, 2019
2 views

Given the following probability distribution:

     X      P(X)

     10    0.1

     20    0.4

     30    0.2

     40    0.3

What is the mean (expected value)?

check_circle

Expert Answer

Step 1

Given data and calculation for the expec...

help_outline

Image Transcriptionclose

P(X) XP(X) 10 0.1 1 0.4 20 0.2 30 40 0.3 12 27 SUM Expected value is given by E(X = x) = xx p(x) = 27(From table)

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Other

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: A hospital director is told that 33% of the emergency room visitors are uninsured. The director want...

A: Stating the appropriate null and alternative hypotheses:Based on the study, it was found that 33% of...

question_answer

Q: Calculate the value of the unpooled test statistic t in each of the following situations. In each ca...

A: (a) The provided data is,

question_answer

Q: To the right are GPA's of 60 students. Answer the following questions regarding this data. Be precis...

A: (A) Using the provided box plot based on the GPA scores, the five-point summary for the male student...

question_answer

Q: A researcher wants to determine what proportion of all high school students plans to attend communit...

A: Obtain the critical value at 90% confidence level:It is given that the margin of error is 0.02. The ...

question_answer

Q: Assuming cholestorol data indicated a mean total cholesterol level for adult persons 20 years of age...

A: Given dataMean µ = 190Standard deviation = 30 mg/dlprobability that a randomly selected adult, ≥ 20 ...

question_answer

Q: Using traditional methods it takes 8.2 hours to receive a basic flying license. A new license traini...

A: Null hypothesis:µ=8.2.Alternative hypothesis:µ<8.2.This is a left tailed test.Since the populatio...

question_answer

Q: In exploring possible sites for a new gym in a suburban neighborhood, the city council wants to be 9...

A: Here, the 95% certain of the proportion of residents in favour of the proposal is estimated. Hence, ...

question_answer

Q: The test statistic of z = 2.34 is obtained when testing the claim that p # 0.879. a. Identify the hy...

A: From the given information,Test statistic of Z- value:Z = 2.34,Null and alternate hypotheses are:H0:...

question_answer

Q: how do I write an equation given this data set?

A: It is given that the initial stock price is 55.Every week the value of stock is decreasing by 12%.