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Statistics

11/29/22

A manufacturing machine has a 5%defect rate. If 2 items are chosen at random, what is the probability that at least one will have a defect

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Statistics

11/29/22

I need help with this question. On how to get started.

Based on a sample of 20 men, 40% owned catsBased on a sample of 20 women, 55% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)

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Statistics Probability Mathematica

11/29/22

Probability (Statistics)

A polling organization randomly selects an adult American for a survey about credit card usage. Suppose 53% of the population is male. Suppose 9.8% of males smoke cigars and 1.36% of females smoke... more

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Statistics Math Biostatistics

11/28/22

Write out a proper interpretation for this confidence interval.

The Professor from Gilligan's Island made a six sided die, each side numbered from 1 to 6, from a palm tree and wants to calculate a 90% confidence interval for what the true proportion would be... more

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Statistics Math Biostatistics

11/28/22

What is the probability of obtaining a sample proportion less than 0.30?

It is known that the population proportion of BYU-Idaho students that go cross country skiing at least once winter semester is p = 0.38. Suppose a random sample of size n = 80 BYU-Idaho students is... more

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Statistics

11/28/22

suppose a rectangular patio has an area of 24 ft² and its length is 2 more than its width. What is its length, width, and perimeter?

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Statistics

11/28/22

Morgan paid $15.50 for 5 slices of pizza and 2 drinks. Pat got 8 slices of pizza and 4 drinks for $26.00. How much would an order of 2 slices of pizza and 2 drinks cost?

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Statistics

11/28/22

A population has parameters μ = 71.9 and σ = 11.3 .

You intend to draw a random sample of size n = 49 . What is the mean of the distribution of sample means? μ ¯ x = What is the standard deviation of the distribution of sample means?... more

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Statistics

11/28/22

Advanced statistics

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 97.1-cm and a standard deviation of 1.8-cm. For shipment, 25 steel rods are bundled... more

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Statistics Math Calculus Linear Algebra

11/27/22

The probability of a plane crashing on a single trip in 2010 was 0.00000276. Find the approximate probability that in 10 million flights, there will be fewer than 17 crashes.

You may need to use the appropriate appendix table or technology to answer this question.The probability of a plane crashing on a single trip in 2010 was 0.00000276. Find the approximate... more

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Statistics Math Calculus Linear Algebra

11/27/22

If you roll a die 100 times, what is the approximate probability that you will roll between 9 and 17 ones, inclusive? (Round your answer to two decimal places.)

You may need to use the appropriate appendix table or technology to answer this question.If you roll a die 100 times, what is the approximate probability that you will roll... more

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Statistics Chemistry

11/27/22

How statistical tools are used in the field of chemistry?

Write the uses of statistica tools like average, standard deviation, estimation, testing, regression and correlation in the field of chemistry?Really need your help!Please answer as soon as... more

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Statistics Math

11/27/22

I can't understand this i need help badly

In a poll, 37% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?" The margin of error in the poll was 2%, and the... more

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Statistics

11/27/22

Statistics Homework

The mean SAT score in mathematics is 541. The standard deviation of these scores is 39. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 541. An... more

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Statistics Algebra 1

11/26/22

normal distribuitions and standar

The heights of adult men in America are normally distributed, with a mean of 69.8 inches and a standard deviation of 2.64 inches. The heights of adult women in America are also normally... more

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Statistics Math Sat Math

11/25/22

What is the expected profit? (Round to the nearest dollar as needed.)

A man buys a racehorse for $20,000 and enters it in two races. He plans to sell the horse afterward, hoping to make a profit. If the horse wins both races, its value will jump to $60,000. If it... more

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Statistics

11/23/22

statistics homework

IQ is normally distributed with a mean of 100 and a standard deviation of 15.a) Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95. Write... more

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Statistics

11/23/22

Statistics homework

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 6.4 days and standard deviation of 1.1 days. Use your graphing calculator to answer the... more

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Statistics

11/23/22

Binoimial probability

The Jones family was one of the first to come to the U.S. They had 6 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:at least 4... more

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Statistics

11/23/22

Confidence Intervals (Mean)

If n = 10, ¯xx¯ = 47, and s = 7, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places.

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Statistics

11/22/22

Spearman's Rho and Non-Monotone Data

I have used SPSS to calculate Spearman's Rho for ordinal and scale data. No significant correlations were found. However, I am not sure that my data is monotonic and I do not understand how to... more

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Statistics

11/22/22

A news report stated that the mean distance

Going to work: A news report stated that the mean distance that commuters in the United States travel each way to work is 14 miles. Assume the standard deviation is 8 miles. A sample of 70... more

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Statistics

11/20/22

A sample of size 65 will be drawn from a population with mean 22 and standard deviation 15. Find the probability that will be between 21 and 25.

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Statistics

11/19/22

Statistics Normal Distribution

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 3 days and a standard deviation of 1.5 days. Let X be the recovery time for a randomly selected... more

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Statistics Math

11/19/22

Help with confidence intervals (mean)

A researcher is interested in finding a 90% confidence interval for the mean number of times per day that college students text. The study included 106 students who averaged 38.3 texts per day. The... more

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A manufacturing machine has a 5%defect rate. If 2 items are chosen at random, what is the probability that at least one will have a defect

I need help with this question. On how to get started.

Probability (Statistics)

Write out a proper interpretation for this confidence interval.

What is the probability of obtaining a sample proportion less than 0.30?

suppose a rectangular patio has an area of 24 ft² and its length is 2 more than its width. What is its length, width, and perimeter?

Morgan paid $15.50 for 5 slices of pizza and 2 drinks. Pat got 8 slices of pizza and 4 drinks for $26.00. How much would an order of 2 slices of pizza and 2 drinks cost?

A population has parameters μ = 71.9 and σ = 11.3 .

Advanced statistics

The probability of a plane crashing on a single trip in 2010 was 0.00000276. Find the approximate probability that in 10 million flights, there will be fewer than 17 crashes.

If you roll a die 100 times, what is the approximate probability that you will roll between 9 and 17 ones, inclusive? (Round your answer to two decimal places.)

How statistical tools are used in the field of chemistry?

I can't understand this i need help badly

Statistics Homework

normal distribuitions and standar

What is the expected profit? ​(Round to the nearest dollar as​ needed.)

statistics homework

Statistics homework

Binoimial probability

Confidence Intervals (Mean)

Spearman's Rho and Non-Monotone Data

A news report stated that the mean distance

A sample of size 65 will be drawn from a population with mean 22 and standard deviation 15. Find the probability that will be between 21 and 25.

Statistics Normal Distribution

Help with confidence intervals (mean)

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What is the expected profit? (Round to the nearest dollar as needed.)