8,839 Answered Questions for the topic statistics

Statistics

02/13/22

You sample 200 people that took a test-drive and find that 25% of them end up buying a car at your dealership within 1 month of the test-drive.

1.      You sample 200 people that took a test-drive and find that 25% of them end up buying a car at your dealership within 1 month of the test-drive. a.      Get a 95% confidence interval for the... more
Follows • 1
Expert Answers •1
Statistics

02/13/22

 a.      What is the mean number of sales? b.     What is the standard deviation of number of sales? c.      Complete the table below.
1.      The probability that a person buys a car from a particular dealership after a test-drive is 25%. From a sample of 100 people that took a test-drive, a.      What is the mean number of... more
Follows • 1
Expert Answers •1
Statistics

02/13/22

a.      Bar Graph b.     Line graph c.      Histogram d.     Pareto chart e.      Pivot chart
2     Using the data from problem 1, make at least one of each of the following charts and tables. Make sure to make your charts with useful information, visually appealing, easy to understand and... more
Follows • 1
Expert Answers •1
Statistics

02/13/22

Statistics Store 1 Store 2 mean median Q1 Q3 Range SD Coefficient of Determination
1.      The cost (in dollars) for a sample of 7 products were obtained for two stores as shown in the table below. Get all the statistics for both stores to complete the second... more
Follows • 1
Expert Answers •1
Statistics

02/13/22

Need actual assistance with statistics problem as have not had these classes in 30 years
Cost of widgets follows a bell curve. The mean cost of a widget is $387, with a standard deviation of $19. Between what two values do about 68% of the widgets cost?
Follows • 1
Expert Answers •1
Statistics Probability

02/13/22

Finding the probability of something from the population
Based on a health care researcher of a hospital, the height of female individuals aged 25-35 is normally distributed with a mean of 161 cm and a standard deviation of 9 cm. Please: Determine with... more
Follows • 1
Expert Answers •1
Statistics

02/13/22

What is the probability that he pulls out a sock that is white, returns it to the drawer, and pulls out another sock that is white?

A boy has 25 socks in his top dresser drawer.  7 are black, 10 are white, and 8 are grey.  The drawer is above the top of his head, so he cannot see what color a sock is until he reaches in and... more
Follows • 1
Expert Answers •1
Statistics Math

02/12/22

How to Solve this Question?
Using a standard 52-card deck, find the following probabilities. Leave your answer as a reduced fraction.c. If two cards are randomly selected, what is the probability of drawing any one suit... more
Follows • 1
Expert Answers •1

02/12/22

What are the decision variables, contraints and objective function for this LPP
I'm starting to learn LP and I am unable to solve this effectively. Can someone please help derive the decision variables, constraints and objective function for this problem so I can solve... more
Follows • 2
Expert Answers •1
Statistics

02/11/22

Need help solving a problem
Cost of widgets follows a bell curve. The mean cost of a widget is $387, with a standard deviation of $19. Between what two values do about 68% of the widgets cost?
Follows • 1
Expert Answers •1
Statistics

02/11/22

What percent of city residents have Facebook or Instagram accounts? What percent of city residents have neither a Facebook nor an Instagram account?

A survey of a city’s residents shows that 62% have a Facebook account, 78% have an Instagram account, and 56% have a Facebook and an Instagram account
Follows • 1
Expert Answers •1
Statistics

02/11/22

Say you have a biased coin and you associate obtaining a head with the value 0 whereas obtaining a tail has a value of 2. Let X be the sum of the values obtained from tossing the coin three times.
(a) If the probability of getting heads in a single toss is 0.32, then what is the probability distribution of X ? x 0 2 4 6 P(X = x) (b) What is P(X < 6)?(c) What is P(1 < X <... more
Follows • 2
Expert Answers •2
Statistics

02/11/22

Houses show that 45% have attached garages 30% have detached garages and 16% have a TV. Also 50% of houses with a TV have an attached garage and 80% of houses with a detached garage do not have a TV.
a) What is the probability that a randomly chosen house has a garage?Answer: b) What is the probability that a house has an attached garage and a home theatre?Answer: c) What is the probability... more
Follows • 1
Expert Answers •1
Statistics

02/11/22

Suppose that last month, WestJet flights arrived on time 81% of the time and you were on 3 of those flights. (Round your answers to 4 decimal places, if needed.)
(a) Given that each flight is independent of one another, what is the probability that all of your flights arrived on time?Answer: (b) What is the probability that none of your flights arrived on... more
Follows • 1
Expert Answers •1
Statistics Math Probability

02/11/22

7. Find the indicated probability. Round to three decimal places.
The participants in a television quiz show are picked from a large pool ofapplicants with approximately equal numbers of men and women. Amongthe last 11 participants there have been only 2 women.... more
Follows • 0
Expert Answers •1
Statistics

02/11/22

distribution and empirical rule
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.61 and a standard deviation of 0.43. Using the empirical rule, what... more
Follows • 1
Expert Answers •1
Statistics

02/10/22

Two fair, six-sided dice are rolled. What is the probability that one die shows a 1 and the other die shows a 6?
Two fair, six-sided dice are rolled. What is the probability that one die shows a 1 and the other die shows a 6?
Follows • 1
Expert Answers •1
Statistics

02/10/22

bell shape distribution
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.51 and a standard deviation of 0.41. Using the empirical rule, what... more
Follows • 1
Expert Answers •1
Statistics Probability

02/09/22

Stat 1880 worksheet problems
Question 1. If 𝑋 represents the number of heads obtained in three tosses of a fair coin, (Create the table for both parts)(a) Find the probability distribution of 𝑋.(b) Find the expected value and... more
Follows • 1
Expert Answers •1
Statistics Probability

02/09/22

Help me with probability

1. Use the following information to answer the next four exercises. Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she... more
Follows • 1
Expert Answers •1
Statistics

02/09/22

Elementary statistics
Suppose a 6-sided die is weighted so that the probability of an outcome is proportional to the outcome. That is, P p P p P p P p P p P p (1 2 2 3 3 4 4 5 5 6 6 ) = = = = = = ( ) ( ) ( ) ( ) ( )... more
Follows • 0
Expert Answers •1
Statistics

02/08/22

Ms. Tina Stevens just purchased a new dress that cost $120. What is the probability that she paid cash?
The credit department of Lion’s Department Store in Anaheim, California, reported that 28% of their sales are cash, 24% are paid with a credit card, and 48% with a debit card. Twenty percent of the... more
Follows • 1
Expert Answers •2
Statistics

02/08/22

Statistics help
A bag contains 9 yellow marbles, 4 red marbles, and 5 white marbles. If two different marbles are drawn from the bag, what is the probability of drawing first a yellow marble and then a white marble?
Follows • 0
Expert Answers •1
Statistics

02/08/22

Statistics help
A bag contains 5 black marbles, 9 white marbles, and 4 red marbles. If a marble is drawn from the bag, replaced, and another marble is drawn, what is the probability of drawing first a black marble... more
Follows • 1
Expert Answers •1

02/08/22

DISCRETE MATHS HELP NEEDED !!
On the menu of a Chinese restaurant, there are 7 chicken dishes, 5 beef dishes, 4 seafood dishes, and 10 vegetable dishes.In how many ways can they order if at most one dish of each kind is chosen?
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.