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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

05/05/22

ch.8 interval mean

question 1Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 31 cookies and finds that the number of chocolate chips per... more

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Statistics

05/05/22

ch.8 interval mean

question 4Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a sample of size 68 with a mean of 19.3 and a standard deviation of 10.7. Enter your... more

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Statistics

05/05/22

ch.8 confidence interval mean

question 13A psychiatrist is interested in finding a 95% confidence interval for the tics per hour exhibited by children with Tourette syndrome. The data below show the tics in an observed hour for... more

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Statistics

05/05/22

ch. 8 confidence interval mean

question 10The high temperatures (in degrees Fahrenheit) of a random sample of 10 small towns are: 96.3 96.4 99.5 98.7 97.5 97.6 97.2 96.8 96.5 97.4 Assume high temperatures are normally... more

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Statistics

05/05/22

ch.8 confidence interval mean

question 9The body temperatures in degrees Fahrenheit of a sample of adults in one small town are: 99.3 98.5 97.8 99.9 98.9 98.1 99.4 96.8 97.1 97.4 97.7 96.3 Assume body temperatures of adults are... more

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Statistics Spss Logistic Regression Conditional Probabilities

05/05/22

Why do so many people interpret logistic regression results (especially the "odds ratios") differently?

When reading journal articles or textbooks explaining logistic regression results, authors explain odds ratios differently and it's very confusing to the readers. Why is that? Is there a better way... more

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Statistics

05/04/22

A political candidate has asked you to conduct a poll to determine what percentage of people support her.

If the candidate only wants a 4% margin of error at a 99% confidence level, what size of sample is needed?Give your answer in whole people.

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Statistics

05/04/22

Assume that a sample is used to estimate a population proportion p.

Find the margin of error M.E. that corresponds to a sample of size 223 with 62.8% successes at a confidence level of 99.9%.M.E. = %Answer should be obtained without any preliminary rounding.... more

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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.

ch.8 interval mean

ch.8 interval mean

ch.8 confidence interval mean

ch. 8 confidence interval mean

ch.8 confidence interval mean

Why do so many people interpret logistic regression results (especially the "odds ratios") differently?

A political candidate has asked you to conduct a poll to determine what percentage of people support her.

Assume that a sample is used to estimate a population proportion p.

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