5,395 Answered Questions for the topic probability

Probability

06/15/21

Box containing 2 white ball and 3 red ball A={ chosen a ball is red} i) write down elements of A and sample space ii) are the outcomes in A are equally likely? explain and find P(A)
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Probability Math Statistics

06/14/21

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 ... more
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Probability Statistics

06/12/21

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... more
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06/12/21

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.
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Probability

06/11/21

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... more
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Probability

06/11/21

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... more
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Probability

06/11/21

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
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Probability

06/11/21

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
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Probability Statistics

06/10/21

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 ... more
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Probability Statistics

06/10/21

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... more
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Probability

06/10/21

Using a standard deck of cards, what is my probability that I choose a red card, put it back, then I choose a 7
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06/10/21

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:... more
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Probability Statistics

06/10/21

Construct Sample

Construct a sample (with at least two different values in the set) of 4 measurements whose mode is larger than at least 1 of the 5 measurements. If this is not possible, indicate "Cannot create... more
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Probability Statistics

06/10/21

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... more
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Probability Math Geometry

06/09/21

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... more
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Probability Statistics

06/09/21

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%... more
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Probability Statistics

06/09/21

Question is in the description.
A new COVID-19 vaccine is developed and the developer company claims that the vaccine’s protectionlasts longer than their competitors. In an experiment with 55 subjects, the company showed that... more
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Probability Statistics

06/09/21

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
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Probability Statistics

06/09/21

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
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Probability Statistics

06/09/21

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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Probability

06/09/21

Describe the relationship between the number of tosses and the probability?

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Probability Statistics

06/08/21

What is the critical value (in a test about proportions) for a left-tailed test with α = 0.05 and n ≥ 30?
What is the critical value (in a test about proportions) for a left-tailed test with α = 0.05 and n ≥ 30?select one: a. z = -1.96b. z = -2.33c. z = 2.58d. z = -1.645e. No Answer
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Probability Math Statistics Act Math

06/08/21

Exercise of conditional probability
Consider a population made up of families in which there are more than five children, so that the percentages of families with 0, 1, 2, 3, 4 and 5 children are given by 5%, 15%, 30%, 25%, 20% and... more
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Probability Math Statistics Act Math

06/08/21

Probability exercise

Suppose a blood test for a certain contagious disease is such that the probabilities of a false negative and a false positive are both equal to 0.01. Suppose further that the probability that a... more
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Probability Statistics

06/07/21

When is a Type II Error made?
A man goes to trial where he is being tried for the murder of his wife. The hypotheses being tested are:Ho : Not guiltyHa : GuiltyWhen is a Type II Error made?Select one:a. If the man did kill his... more
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