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Statistics

09/05/23

Central Limit Theorem Probability question

The weight of people in a small town in Missouri is known to be normally distributed with a mean of 198 pounds and a standard deviation of 31 pounds. On a raft that takes people across the river, a... more

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Statistics

09/05/23

Statistic Probability

The probability that concert tickets are available by telephone is 0.91. For the same event, the probability that tickets are available through a web site is 0.98. Assume that these 2 ways to buy... more

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Statistics

09/05/23

Mean and Standard Deviation

The number of pages in a PDF document you create has a discrete uniform distribution from 5 to 11 pages (including the end points). What are the mean and standard deviation of the number of pages... more

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Statistics

09/05/23

Mean and Standard Deviation

The number of pages in a PDF document you create has a discrete uniform distribution from 5 to 11 pages (including the end points). What are the mean and standard deviation of the number of pages... more

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Statistics

09/05/23

Mean and Variance

The lengths of plate glass parts are measured to the nearest tenth or a millimeter. The lengths are uniformly distributed with values at every tenth of a millimeter starting at 590.0 and continuing... more

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Statistics

09/05/23

Wavelength variance

Assume that the wavelengths of photosynthetically active radiations (PAR) are uniformly distributed at integer nanometers in the red spectrum from 640 to 670nm.What is the variance of the... more

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Statistics

09/01/23

Find x such that P(X ≤ x) = 0.350. (Statistics with a Z Table)

Hi I am looking to find the steps to solve this probability question.Let X be normally distributed with mean μ = 132 and standard deviation σ = 35. [You may find it useful to reference the z... more

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Statistics

09/01/23

How to differentiate between dependent and independent probabilities

How does one differentiate between dependent and independent variables? Please provide examples

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Statistics

08/31/23

Is 0.013 less than 0.05 making it significant.

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Statistics

08/14/23

Intro to Statistics Homework Help

Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 130000 dollars. Assume... more

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Statistics

08/12/23

How long is the response time for questions? (it's been 5 hours for my first one and I just want to know the general time)

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Statistics

08/11/23

A population of values has a normal distribution with μ = 17.1 and σ = 12.5 . You intend to draw a random sample of size n = 97 . Find P8, which is the mean separating the bottom 8% mean

A population of values has a normal distribution with μ=17.1 and σ=12.5. You intend to draw a random sample of size n=97.Find P8, which is the mean separating the bottom 8% means from the top 92%... more

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Statistics

08/11/23

Statistics Problem

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.4 years, and standard deviation of 0.6 years.If you randomly purchase 12 items, what is the probability... more

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Statistics

08/10/23

What sample size would you need to in order to estimate the mean weight of all female white-tailed deer, with a 96% confidence level, to within 8 pounds of the actual weight?

You are interested in estimating the the mean weight of the local adult population of female white-tailed deer (doe). From past data, you estimate that the standard deviation of all adult female... more

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Statistics Math

08/08/23

Normal distribution

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 43 ounces and a standard deviation of 10 ounces.Use the Standard... more

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Statistics

08/08/23

Consider the following random sample of diameter measurements (in inches) of 19 softballs.

Consider the following random sample of diameter measurements (in inches) of 19 softballs.4.83, 4.77, 4.84, 4.76, 4.83, 4.79, 4.88, 4.72, 4.72, 4.76, 4.73, 4.89, 4.7, 4.75, 4.81, 4.75, 4.75, 4.79,... more

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Statistics

08/07/23

Consider the following random sample of diameter measurements (in inches) of 19 softballs.

Consider the following random sample of diameter measurements (in inches) of 19 softballs.4.83, 4.77, 4.84, 4.76, 4.83, 4.79, 4.88, 4.72, 4.72, 4.76, 4.73, 4.89, 4.7, 4.75, 4.81, 4.75, 4.75, 4.79,... more

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Statistics

08/05/23

If n=290 and ˆ p (p-hat) =0.36, find the margin of error at a 90% confidence level Give your answer to three decimals

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Statistics

08/05/23

If n=290 and ˆ p (p-hat) =0.36, find the margin of error at a 90% confidence level Give your answer to three decimals

If n=290 and ˆp�^ (p-hat) =0.36, find the margin of error at a 90% confidence levelGive your answer to three decimals

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Statistics

08/03/23

A news organization surveyed 70 adults. Each said he or she gets news from only one source. Here is a summary of their sources of news.

A news organization surveyed 70 adults. Each said he or she gets news from only one source. Here is a summary of their sources of news.Source of News Number of AdultsTelevision ... more

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Statistics

08/03/23

Events and are mutually exclusive. Suppose event occurs with probability and event occurs with probability. Compute the following.

Events and are mutually exclusive. Suppose event occurs with probability and event occurs with probability. Compute the following. (A) Compute the probability that A does not occur or B does not... more

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Statistics

08/03/23

Statistics help!

A manufacturing machine has a 2% defect rate.If 4 items are chosen at random, what is the probability that at least one will have a defect?

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Statistics

08/03/23

Statistics Homework help

A poll is given, showing 65% are in favor of a new building project.If 7 people are chosen at random, what is the probability that exactly 1 of them favor the new building project?

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Statistics

08/02/23

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 170.

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 170. The grading process of this year's... more

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Statistics

08/02/23

Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use.

Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use. Studies have shown that the onset of withdrawal is experienced a mean of 40.5 hours after the... more

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Central Limit Theorem Probability question

Statistic Probability

Mean and Standard Deviation

Mean and Standard Deviation

Mean and Variance

Wavelength variance

Find x such that P(X ≤ x) = 0.350. (Statistics with a Z Table)

How to differentiate between dependent and independent probabilities

Is 0.013 less than 0.05 making it significant.

Intro to Statistics Homework Help

How long is the response time for questions? (it's been 5 hours for my first one and I just want to know the general time)

A population of values has a normal distribution with μ = 17.1 and σ = 12.5 . You intend to draw a random sample of size n = 97 . Find P8, which is the mean separating the bottom 8% mean

Statistics Problem

What sample size would you need to in order to estimate the mean weight of all female white-tailed deer, with a 96% confidence level, to within 8 pounds of the actual weight?

Normal distribution

Consider the following random sample of diameter measurements (in inches) of 19 softballs.

Consider the following random sample of diameter measurements (in inches) of 19 softballs.

If n=290 and ˆ p (p-hat) =0.36, find the margin of error at a 90% confidence level Give your answer to three decimals

If n=290 and ˆ p (p-hat) =0.36, find the margin of error at a 90% confidence level Give your answer to three decimals

A news organization surveyed 70 adults. Each said he or she gets news from only one source. Here is a summary of their sources of news.

Events and are mutually exclusive. Suppose event occurs with probability and event occurs with probability. Compute the following.

Statistics help!

Statistics Homework help

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 170.

Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use.

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