4,099 Answered Questions for the topic probability

Probability

2d

#### Probability of 2 different people choosing some of the same marbles from a jar

There are 20,412 unique marbles in a jar. One person picks 11 marbles, and puts them back and the jar is thoroughly mixed. Another person then picks 5 marbles. What is the chance that 2 of the 5...
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Probability

3d

#### Probability_Math

58% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers...
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Probability

4d

#### need help with this Math question!

In the 2016 referendum on the independence of wales from the UK, approx.44% of welsh population was pro-independence. Suppose we now interview arandom sample of 100 people. What is the probability...
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Probability

4d

#### Green, Red and Blue Ball (Probability)

In a bag there are green, blue and red balls. Take one ball off the bag. The probability of taking a green ball is 1/3, and the probability of taking off a blue ball is 1/2. There are 6 red balls....
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5d

#### Find the probability that

From a box there are 6 white balls and 4 red balls, then 4 balls are selected, without replacement, at random and transferred to a second box, which is empty.balls are selected at random and...
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6d

#### Determine the probability that this student is a) very well prepared, b) poorly prepared.

In a group of 10 students taking the exam, there are 3 who have prepared very well, 4 well, 2 moderately well and one poorly.well, 4 well, 2 moderately and 1 poorly prepared. There are a total of...
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7d

#### Using the set of data, which set has larger variance? Justify the answer without computing the variance of each set of data.

Consider the following data:Data 1 Data 21 142 144 156 152 163 135 121 133 ...
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Probability Statistics

8d

#### Finding probability using population mean and sample standard deviation

Greenleaf Lawn Care finds that the population mean cost of leasing homes in the area is $1250. If 20 homes are randomly selected, the standard deviation in the sample is s = $963. What is the...
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9d

#### what percent of these differ from the population mean(nomal distribution)

if a set of observations is normally distributed, what percent of these differ from the population mean by more than 0.96σ, where σ is the population standard deviation.

Probability

9d

#### Statistics probability

Use a normal approximation to find the probability of the indicated number of voters. In this case, assume that 144 eligible voters aged 18-24 are randomly selected. Suppose a previous study...
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Probability

10d

#### Mathematics Probability

An average of 5 customers come to the shop every half hour. Find the probability that exactly two customers will come to the shop during a given hour2. The life span of an automatic washer is...
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Probability

10d

#### What is the distribution of x.

suppose the random varible x has a binomial distribution with p>.5 then the distribution of x isa) skewed to the leftb) skewed to the rightc) normal distributiond) symmetric

Probability

10d

#### What is the distribution of x.

suppose the random varible x has a binomial distribution with p>.5 then the distribution of x isa) skewed to the leftb) skewed to the rightc) normal distributiond) symmetric

Probability Statistics

11d

#### Problem on bivariate probability distribution

Suppose the bivariate probability distribution of a random vector ( X,Y) is given according to the distribution in the following table ...
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Probability Statistics

11d

#### If the equation of the regression line is y = 4.964 + 0.939x, how can it be interpreted?

If the equation of the regression line is y = 4.964 + 0.939x, how can it be interpreted?Select one:a. The slope of the line is .0.939b. Every unit of change in the value of x, the value of y also...
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Probability

11d

#### Using a standard deck of cards, what is my probability that I choose a red card, put it back, then I choose a 7

#### I need so much help with this question from my Algebra homework very quickly please I am so desperate

Question 1: Identify the variance and the standard deviation of the given data set.{7, 8, 6, 3, 4, 12, 14, 10} A.) variance: 12.75 standard deviation: 12.75 B.) variance: 7.2 standard deviation:...
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Probability Statistics

11d

#### Construct a sample

Construct a sample (with at least two different values in the set) 5 of measurements whose median is larger than all the members in the sample. If this is not possible, indicate "Cannot create...
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#### Please help me!! Probability! Need to turn this in soon, thank you!!

The senior class of Serious Tech High School decided to have an ice cream party. They decide on ice cream cones. But being independent thinkers they each want to have a different cone. But the...
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Probability Statistics

12d

#### Question is in the decription.

A survey is done by a news agency for presidential elections. The agency reported that the Reds areleading Blues by 11%, because 48% of the participants supported Red Party’s candidate while 37%...
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Probability Statistics

12d

#### Choose the correct answer

The correlation coefficient for a set of paired data points will always be a number between zero and one inclusive.Select one: a. True b. False c. insufficient information

Probability Statistics

12d

#### Choose the correct answer

If two different scatter plots have exactly the same regression lines, then they will also have the same correlation coefficient.Select one: a. True b. False c. insufficient information

Probability Statistics

12d

#### Choose the correct answer

If the points of a scatter plot all lie exactly along a straight line, then their correlation coefficient will be exactly equal to one.Select one: a. Trueb. Falsec. insufficient information

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