(Answered) Students in a class take a quiz with eight questions the

Statistics

Students in a class take a quiz with eight questions. The number x of questions answered correctly can be approximated by the following probability distribution. Complete parts? (a) through? (e).

x 0 1 2 3 4 5 6 7 8

?P(x) 0.02 0.02 0.06 0.05 0.11 0.22 0.28 0.16 0.08

?(a) Use the probability distribution to find the mean of the probability distribution.

μ=

?(Round to the nearest tenth as? needed.)

?(b) Use the probability distribution to find the variance of the probability distribution.

sigma squared

σ2=

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92844444
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

In a random sample ofnbsp50nbsprefrigerators the mean

In a random sample of 50 ?refrigerators, the mean repair cost was ?$146.00 and the population standard deviation is ?$17.80. Construct a 90?% confidence interval for the population mean repair cost. Interpret the results ...

Define and discuss the following business valuation process

Define and discuss the following business valuation process: a. Basic Framework b. Book Value Approach c. Market Value of Traded Securities Approach d. Market Multiple Approach e. Discounted Cash Flow Approach . details ...

Data are collected on the relationship between the number

Data are collected on the relationship between the number of hours per week practicing a musical instrument and scores on a math test. The line of best fit is as follows: y = 72.5 + 2.8x. What would you predict the score ...

A bottle of water is supposed to have 12 ounces the

A bottle of water is supposed to have 12 ounces. The bottling company has determined that 98% of bottles have the correct amount. Which of the following describes a binomial experiment that would determine the probabilit ...

Two fair dice are rolled and the sum of the points is noted

Two fair dice are rolled and the sum of the points is noted. Find the probability that the sum is 6 given that at least one of the numbers is less than 3.

Billy currently has 500 in an account that earns 12 apr

Billy currently has $500 in an account that earns 12% APR, compounded monthly. Assuming he doesn't withdraw any of the funds, how much will his balance be in 6 years?

Two plots at rothamsted experimental station were studied

Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows. 6.12 7.03 5.77 6.96 7.31 ...

Let a random sample be taken of size n 64 from a

Let a random sample be taken of size n = 64 from a population with a known standard deviation of 15. Suppose that the mean of the sample is 40. Find the 99% confidence interval for the mean of the population from which t ...

We polled a sample of 900 random people on whether they

We polled a sample of 900 random people on whether they thought a candidate for a high government position deserves to be nominated. We found that 405 of the 900 people (or 45%) believe the candidate should not be nomina ...

Consumer product manufacturers commonly include customer

Consumer product manufacturers commonly include customer satisfaction surveys on product warranty cards that are sent back to the company. An outdoors company redesigned a popular camping tent, and it wants to know wheth ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert