17 Answered Questions for the topic Probability And Statistics

Probability And Statistics Permutations And Combinations

01/28/22

A football team consisting of 2 forwards, 4 midfielders, 4 defenders and 1 goalkeeper is to be selected from a squad of

23 footballers comprising 5 forwards, 8 midfielders, 7 defenders and 3 goalkeepers. How many different teams can be selected?
Follows • 1
Expert Answers •1
Probability And Statistics Purmutations And Combinations

01/28/22

Four letters are picked at random from the word THURSDAY. What is the probability that there is at least one vowel among the letters?
Follows • 1
Expert Answers •1
Probability And Statistics

09/26/21

brands uniformity
Lives of two brands of private cars in a recent survey were found asfollows:Life (No. of years) 0-4 4-8 8-12 12-16 16-20 20-24Model A 5 9 11 7 6 2Model B 2 7 13 8 4 6(i) Which of the two brands... more
Follows • 1
Expert Answers •1
Probability And Statistics

06/10/21

How do I interpret this question to get the data out? How do I set up the equations for the probability section?
[email protected] strength is usually related to its strength at 28 days based on the load that a standard cube of concrete can sustain when tested in compression in a compression... more
Follows • 1
Expert Answers •1
Probability And Statistics

04/28/21

A test has 30 multiple choice questions with 4 choices each. Which expressions represent the total number of ways to answer the following questions
Follows • 1
Expert Answers •1
Probability And Statistics Normal Distribution

01/29/21

normally distributed
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x-score that corresponds to a z-score of 2.45.
Follows • 2
Expert Answers •1
Probability And Statistics Normal Distribution

01/29/21

Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages.
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 22.2 and the standard... more
Follows • 2
Expert Answers •1
Probability And Statistics

01/29/21

The distribution of cholesterol levels in teenage boys is approximately normal with and (Source: U.S. National Center for Health Statistics). Levels above 200 warrant attention.
The distribution of cholesterol levels in teenage boys is approximately normal with and (Source:U.S. National Center for Health Statistics). Levels above 200 warrant attention.a) Find the... more
Follows • 2
Expert Answers •1
Probability And Statistics

10/08/20

The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 30 liters, and standard deviation of 4.5 liters.
The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 30 liters, and standard deviation of 4.5 liters.A) What is the probability that daily production... more
Follows • 2
Expert Answers •1
Probability And Statistics

08/30/20

what percentage of the students have grade point averages that are at least 3.72? Please do not round your answer.
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of and a standard deviation of . Using the empirical rule, what... more
Follows • 2
Expert Answers •1
Probability And Statistics

05/05/20

Probability and Statistics-Normal Distribution
The life of a battery is normally distributed with a mean of 450 days and a standard deviation of 27 days. What percent of batteries last longer than 451 days? Round your answer to the nearest tenth.
Follows • 0
Expert Answers •1
Probability And Statistics Math Statistics Probability

02/21/20

EXPECTED VALUE GAMBLING WHEEL QUESTION
Suppose you bet $1 on red at the roulette wheel. There are 18 red numbers and 20 nonred numbers (including the green 0 and 00). You win $1 if a red number comes up, and you lose $1 if any other... more
Follows • 1
Expert Answers •1
Probability And Statistics Need Help!

02/19/20

If the game costs $5 to play, what is the standard deviation?
In a new card game, you start with a well- shuffled full deck and draw 3 cards without replacement. If you draw 3 hearts, you win $55. If you draw 3 black cards, you win $25. For any other draws,... more
Follows • 0
Expert Answers •1
Probability And Statistics

09/17/19

A passcode for a certain security system consists of 2 letters, followed by 4 digits. If neither the letters or digits are allowed to repeat, how many different passcodes are possible?
Follows • 1
Expert Answers •2
Probability And Statistics Statistics Probability

06/27/19

the percentage of cell phone who used their cell phone to send or receive text messages was 80%. If p is the proportion of cell owners who used their phone to text, then what was the mean for p̂?
A polling firm contacted a simple random sample of 1100 people chosen from the population of cell phone owners.
Follows • 1
Expert Answers •1
Probability And Statistics

06/19/14

Probability and Statistics/Operations Research. Please help!!!
You are trying to choose a reliable insurance company for fire insurance for your factory. There are only two fire insurance companies in your area. 60% of businesses have coverage from company A.... more
Follows • 2
Expert Answers •1
Probability And Statistics

06/19/14

Probability and Statistics/Operations Research. Please help!!!
Due to local zoning laws, you will only be allowed to build one widget factory this year. You have decided that the only reasonable choices are between a medium-sized factory and a large factory,... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.