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Statistics

05/15/22

Statistics - Expected Value

A process for producing an industrial chemical yields a product containing two types of impurities.For a specified sample from this process, let Y1 denote the proportion of impurities in the sample... more

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Statistics

05/13/22

What is the probability of rolling a five with two dice?

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Statistics

05/11/22

A student averages 70% on multiple choice tests. What is the probability that he misses the first 3 questions until he gets a question correct?

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Statistics

05/10/22

P(z > c) = 0.6592

Find c rounded to two decimal places

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Statistics

05/10/22

P(z > c) = 0.6592

Find c rounded to two decimal places

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Statistics Probability

05/10/22

How many ways can this be done?

Three research departments have 10, 6, and 8 members, respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this... more

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Statistics Probability

05/10/22

In how many ways?

A university student is selecting courses for his next semester. He can choose from 3 humanities courses and 10science courses. In how many ways can he choose 7courses if fewer than 2 must be... more

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Statistics

05/10/22

Draw the Boxplot

Areas of Islands The data show the sizes in square miles of notable islands in the Baltic Sea and the Aleutian Islands. Baltic Sea Aleutian... more

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Statistics

05/10/22

Enter your answers as fractions or decimals rounded to three decimal places.

A bag contains 5 red marbles, 9 white marbles, and 6 blue marbles. Randomly choose two marbles, one at a time, and without replacement. Find the following. Enter your answers as fractions or... more

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Statistics

05/10/22

Find the probability that the student is taking calculus, given that he or she is on the dean's list.

At a large university, the probability that a student takes calculus and is on the dean's list is 0.100. The probability that a student is on the dean's list is 0.20. Find the probability that the... more

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Statistics Probability

05/09/22

The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. What is the probability that an individual’s clotting time will be less than 2 seconds or greater than 11?

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Statistics

05/09/22

Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps

fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 40 years old if they keep the lights on at... more

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Statistics

05/09/22

Round your final answer to one decimal place.

Home Internet Access In a recent year, a study found that 77% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college... more

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Statistics

05/09/22

Round intermediate and final answers to at least three decimal places.

Manual Transmission Automobiles In a recent year, 6% of cars sold had a manual transmission. A random sample of college students who owned cars revealed the following: out of 130 cars, 20 had... more

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Statistics

05/09/22

Estimate the true proportion with 90% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place.

Home Internet Access In a recent year, a study found that 76% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college... more

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Statistics

05/09/22

statistics question

Hospitals must keep enough antibiotics on hand to treat infectious diseases. Researchers want to determine whether the infectious disease rate is higher in some months than in others. To find out,... more

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Statistics

05/09/22

Implicit differentiation

Find the derivative of the following functions.x³-y³=2xysin x=2x cos² y 2x-3/x-y=11/x+1/y=10x²y²-3xy=5

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Statistics Math Sat Math Algebra

05/08/22

Given the sample: 6, 8, 13, 10, 7, x, and knowing that the median is equal to 9. Find the possible values of x

Given a sample: 6, 8, 13, 10, 7, x and knowing that the median is equal to 9. Find the possible values of x.The answer is x≥10

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Statistics Math Sat Math Algebra

05/08/22

Given a sample: 6, 8, 13, 10, 7, x and knowing that the median is equal to 9. Find the possible values of x

Given a sample: 6, 8, 13, 10, 7, x and knowing that the median is equal to 9. Find the possible values of x.The answer is x≥10

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Statistics

05/08/22

Statistics and probability

The age of children in kindergarten on the first day of school is uniformly distributed between 4.86 and 5.78 years old. A first time kindergarten child is selected at random. Round answers to 4... more

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Statistics

05/07/22

probabilty of loss if the profits to be realised from a certain business venture , to the nearest $1000 are -$1000=0.1, -$2000=0.1, $0=0.2, $1000=0.2, $2000=0.3 and $3000=0.1?

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Statistics Math Algebra Ap Statistics

05/06/22

Max placed 5 brown bottles and 5 white bottles on a wall for target practice. The probability of him breaking a bottle is 0.95.

What is the probability that he will hit fewer than 8 of the bottles?

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Statistics Math Algebra Ap Statistics

05/06/22

At a high school, 20% of statistics students retake their 3 week test. There are 15 students in Mr. Smith’s class.

Find the probability that exactly four of them retake this test.

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Statistics Math Algebra Ap Stats

05/06/22

A manufacturer of LED light bulbs knows that 3% of the production of their 15W bulbs will be defective.

What is the probability that exactly 5 bulbs in a carton of 144 bulbs will be defective?

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Statistics

05/05/22

Find the probability that the number x of correct answers is fewer than 4.

Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there are n=9 trials, each with probability of success (correct) given by p=0.65. Find the... more

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Statistics - Expected Value

What is the probability of rolling a five with two dice?

A student averages 70% on multiple choice tests. What is the probability that he misses the first 3 questions until he gets a question correct?

P(z > c) = 0.6592

P(z > c) = 0.6592

How many ways can this be done?

In how many ways?

Draw the Boxplot

Enter your answers as fractions or decimals rounded to three decimal places.

Find the probability that the student is taking calculus, given that he or she is on the dean's list.

The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. What is the probability that an individual’s clotting time will be less than 2 seconds or greater than 11?

Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps

Round your final answer to one decimal place.

Round intermediate and final answers to at least three decimal places.

Estimate the true proportion with 90% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place.

statistics question

Implicit differentiation

Given the sample: 6, 8, 13, 10, 7, x, and knowing that the median is equal to 9. Find the possible values of x

Given a sample: 6, 8, 13, 10, 7, x and knowing that the median is equal to 9. Find the possible values of x

Statistics and probability

probabilty of loss if the profits to be realised from a certain business venture , to the nearest $1000 are -$1000=0.1, -$2000=0.1, $0=0.2, $1000=0.2, $2000=0.3 and $3000=0.1?

Max placed 5 brown bottles and 5 white bottles on a wall for target practice. The probability of him breaking a bottle is 0.95.

At a high school, 20% of statistics students retake their 3 week test. There are 15 students in Mr. Smith’s class.

A manufacturer of LED light bulbs knows that 3% of the production of their 15W bulbs will be defective.

Find the probability that the number x of correct answers is fewer than 4.

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