Solution-Variance and standard deviation for the expected

Variance and standard deviation for the expected number

Reference no: EM131942071

A student takes a multiple choice exam with 10 questions. Each of the questions is worth 10% of the final grade. A passing grade is 70% or better. Suppose the student was unable to study for the exam and only knows 60% of the material.

a. Find the probability that the student gets 7 questions correct. Enter answer rounded to 2 decimal places. Do not answer question as a percent.

b. Find the probability that the student passes the exam. Enter answer rounded to 2 decimal places. Do not answer question as a percent.

c. Find the probability that the student receives an A on the exam, 90% or higher. Enter answer rounded to 2 decimal places. Do not answer question as a percent.

d. How many questions would you expect the student to get correct (the mean or average)?

e. What is the variance and standard deviation for the expected number of correct answers? Enter answer rounded to 1 decimal place.

Reference no: EM131942071

Questions Cloud

How theories of organisational behaviour may be applied : Explain how theories of organisational behaviour may be applied in an organisational setting - Evaluate potential organisational problem situations

Normal distribution with standard deviation of five percent : On average, 28 percent of 18 to 34 year olds check Facebook profiles before getting out of bed in the morning.

What proportion or probability vehicles : a. What proportion or probability vehicles will be travel less than or equal to the speed limit?

What is research hypothesis : What is your research hypothesis? Should you conduct a one tailed or a two tailed test? Why?

Variance and standard deviation for the expected number : What is the variance and standard deviation for the expected number of correct answers? Enter answer rounded to 1 decimal place.

Create a hypothetical scenario in which you answer questions : Based on what you have learned about inventory management, create a hypothetical scenario in which you answer those questions for the CEO of your firm.

Does the us government support the internet : Given an IP packet of size 540 bytes and a maximum packet size of 200 bytes, what are the IP Fragment Offsets and More flags for the appropriate packet fragment

What is the probability that a bill will be paid : a. What is the probability that a bill will be paid between 12 and 18 days?

Identify control organization need to implement to compliant : Describe the main elements of SOX and identify the controls organizations need to implement to be compliant with SOX.

User Account

All Pages

Variance and standard deviation for the expected number

Reference no: EM131942071

Reference no: EM131942071

Questions Cloud

Reviews

Write a Review

Basic Statistics Questions & Answers

Statistics-probability assignment

What is the least number

Determine the value of k

What is the probability

Binomial distributions

Caselet on mcdonald’s vs. burger king - waiting time

Generate descriptive statistics

Sampling variability and standard error

Estimate the population mean

Conduct a marketing experiment

Find out the probability

Linear programming models

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT