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Statistics

03/03/23

analysis how do you do this

The National Center for Health Statistics sampled 5844 American women over the age of 20 and found that their median weight was 157.2 pounds. A histogram of the data set was skewed to the right.... more

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Statistics

03/02/23

weekly cleaning budget

The amount of money spent weekly on cleaning, maintenance, and repairs at a large restaurant was observed over a long period of time to be approximately normally distributed, with mean 𝜇 = $623 and... more

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Statistics

03/02/23

Normal distribution

Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)𝜇 = 51; 𝜎 = 14P(40 ≤ x ≤ 47) =

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Statistics

03/02/23

normal curve sketches

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)The area between z = −2.47 and z = −1.74 is

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Statistics

03/02/23

Binomial experiment

Consider a binomial experiment with n = 9 trials, where the probability of success on a single trial is p = 0.40.Find the probability P(x ≥ 1). Round your answer to three decimal places.

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Statistics

03/02/23

binomial experiment

Consider a binomial experiment with n = 9 trials, where the probability of success on a single trial is p = 0.10.Find the probability P(x = 0). Round your answer to three decimal places.

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Statistics

03/02/23

probability distribution

Consider the probability distribution shown below. x 0 1 2 P(x) 0.25 0.40 0.35 Compute the standard deviation of the distribution. (Round your answer to four decimal places.)

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Statistics

03/02/23

statistics, histograms about mean and medians

Use the properties of the mean and median to determine which are the correct mean and median for the following histogram.

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Statistics

03/02/23

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?

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Statistics

03/02/23

Suppose that x is an event, and that p(x) = 0.78 what is p(x)

i.e the probability that x will not occur

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Statistics

03/02/23

statistic problem

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 3 19 9 31 Female 13 14 12 39 Total 16 33 21 70 If one student is chosen at random,Find the... more

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Statistics

03/01/23

how do you find Q?

Find the mean of a binomial distribution when q = 15% and n = 191.

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Statistics

03/01/23

Standard deviation ?

Determine the standard deviation, if the mean is 3.0 and the coefficient of variation is 2.0%. (Enter your answer to 4 decimal places.)

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Statistics

03/01/23

Normal distribution

Given a normal distribution with 𝜇 = 12 and 𝜎 = 10. If a random sample of size n = 70 is drawn, find P(12 ≤ x ≤ 14).Round to three decimal places.

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Statistics Probability

03/01/23

Please help me what option and how?

A carnival game is designed so that approximately 10% of players will win a large prize. If there is evidence that the percentage differs significantly from this target, then adjustments will be... more

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Statistics Probability

03/01/23

Help me complete to a complete answer

It is claimed that 75% of puppies are house-trained by the time they are 6 months old. To investigate this claim, a random sample of 50 puppies is selected. It is discovered that 42 are... more

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Statistics Probability

03/01/23

Please help me solve and come to the complete answer please Hint (complete answer) Thank you!

Simone read online that the failure rate in Arizona for the first attempt of the written driver’s test is 60%. Simone thinks the Arizona rate is less than 60%. To investigate, she selects an SRS of... more

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Statistics

03/01/23

Confidence Interval Statistics

Velvetleaf is a particularly annoying weed in cornfields. It produces lots of seeds, and the seeds wait in the soil for years until conditions are right. How many seeds do velvetleaf plants... more

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Statistics

03/01/23

Standard curve!

Find z such that 8.9% of the standard normal curve lies to the right of z. (Use 2 decimal places.)

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Statistics

03/01/23

College class course grades

In a college class, the course grade is based on: attendance, two major tests, and a final project. Attendance is worth 18% of total grade, each major test is worth 23%, and the final project is... more

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Statistics

02/28/23

AP Statistics (Highschool), Confidence Intervals

For a confidence level of 80% with a sample size of 24, find the critical t value.t = ______

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Statistics Math

02/28/23

You purchase 25 lottery tickets for which the probability of winning a prize is 1 in 100. What is your probability of having at least one winning ticket?

Statistic help!!

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Statistics Math

02/28/23

Are the events of being born on a Wednesday and being born in July mutually exclusive or overlapping? Explain. Find P(born on Wed or in July) and P(born on Wed and in July).

Statistic help!!!

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Statistics Math Probability Mathematica

02/27/23

Expected Value Variance Please Help!!

Let 𝑋 be a random variable with density𝑓(𝑥)={𝐶(4𝑥−𝑥^2) , 0≤𝑥≤3 0 , otherwisewhere 𝐶∈𝐑 is some constant.C = 1/9E[X] = 1.75Find E[x^2] (the second order moment of 𝑋) = ??Find var[𝑋], the variance... more

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Statistics

02/27/23

What is the probability that a randomly selected teacher makes less than $53,000 per year?

The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large... more

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analysis how do you do this

weekly cleaning budget

Normal distribution

normal curve sketches

Binomial experiment

binomial experiment

probability distribution

statistics, histograms about mean and medians

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?

Suppose that x is an event, and that p(x) = 0.78 what is p(x)

statistic problem

how do you find Q?

Standard deviation ?

Normal distribution

Please help me what option and how?

Help me complete to a complete answer

Please help me solve and come to the complete answer please Hint (complete answer) Thank you!

Confidence Interval Statistics

Standard curve!

College class course grades

AP Statistics (Highschool), Confidence Intervals

You purchase 25 lottery tickets for which the probability of winning a prize is 1 in 100. What is your probability of having at least one winning ticket?

Are the events of being born on a Wednesday and being born in July mutually exclusive or overlapping? Explain. Find P(born on Wed or in July) and P(born on Wed and in July).

Expected Value Variance Please Help!!

What is the probability that a randomly selected teacher makes less than $53,000 per year?

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