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Statistics

11/10/22

Find and interpret the lower quartile and upper quartile of the mental development index.

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Statistics

11/10/22

statistics homework 8.2

A genetic experiment involving peas yielded one sample of offspring consisting of 448 green peas and 140 yellow peas. Use a 0.01 significance level to test the claim that under the... more

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Statistics Probability

11/09/22

Robin bought a four-scoop ice cream cone having a scoop each of vanilla, chocolate, strawberry and cherry. In how many orders can the four scoops be stacked on the cone if they are stacked one on... more

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Statistics

11/09/22

express the confidence interval (0.47,0.63) in the form p-hat + or - moe.

Statistics

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Statistics

11/06/22

Homework help needed I can not figure this one out

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 122000 dollars. Assume... more

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Statistics

11/06/22

Homework question help please

CNNBC recently reported that the mean annual cost of auto insurance is 1040 dollars. Assume the standard deviation is 280 dollars. You take a simple random sample of 70 auto insurance policies.... more

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Statistics

11/06/22

Statistics homework question

CNNBC recently reported that the mean annual cost of auto insurance is 1041 dollars. Assume the standard deviation is 300 dollars. You take a simple random sample of 91 auto insurance policies.Find... more

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Statistics

11/06/22

Suppose a math class contains 35 students. There are 15 females (four of whom speak Spanish) and 20 males (five of whom speak Spanish). Give all answers as decimals to at least two decimal places.

Suppose a math class contains 35 students. There are 15 females (four of whom speak Spanish) and 20 males (five of whom speak Spanish). Give all answers as decimals to at least two decimal... more

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Statistics

11/05/22

Statistics help

Suppose a jar contains 9 red marbles and 14 blue marbles. If you reach in the jar and pull out 2 marbles at random, find the probability that both are red.

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Statistics

11/05/22

how to solve this problem

HOW TO SOLVE THIS PROBLEM!Consider a binomial experiment with n = 4 trials where the probability of success on a single trial is p = 0.45. (Round your answers to three decimal places.)(a)... more

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Statistics

11/05/22

STAT homework help

In a survey, 13 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $17. Construct a... more

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Statistics

11/05/22

STAT homework help

In a survey, 28 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $4. Find the margin of... more

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Statistics

11/05/22

For a standard normal distribution, find: P(z > c) = 0.5586 Find c.

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Statistics Biostatistics

11/04/22

What are the sample mean and margin of error?

50 random flights from D.C to New York City were selected and the resulting 95% confidence interval was (82.5, 88.7). What are the sample mean and margin of error?

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Statistics Biostatistics

11/04/22

How to find and calculate the info below

It is believed that the mean flight time from Seattle to New York City is 310 minutes. You want to test to determine if it is different from this. The population standard deviation is 10... more

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Statistics Math

11/04/22

Confidence Interval

You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 86.5 73 84.1 77.7 84.9 79.3 87.4 84.4 67.5 86.1 69 Find the 95% confidence interval. Enter... more

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Statistics

11/03/22

How can I combine 12 events with 3 possible outcomes each(pass fail or average) in every possible arrangement

Am I using combination or permutation??

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Statistics

11/03/22

Hi I need help with this stat question

Improving SAT scores. Refer to the Chance (Winter 2001) study of students who paid a private tutor (or coach) to help them improve their Standardized Assessment Test (SAT) scores, Exercise 4.50 (p.... more

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Statistics

11/02/22

Statistics Question

How many ways are there to select 4 candidates from 9 equally qualified recent graduates for openings in an accounting firm?

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Statistics

11/02/22

How did you calculate 98% confident as 2.326?

The original question is: How large of a sample size is required?The question reads as follows:You want to obtain a sample to estimate a population proportion. Based on previous evidence, you... more

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Statistics

11/02/22

Statistics Question

How many ways can a committee of 2 faculty members and 3 students be selected from 7 faculty members and 8 students? Show your work.

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Statistics

11/02/22

Which scenario is best to achieve objective?

Objective: To witness lightning striking a 1 meter area of the ocean with the least amount of wait time.Scenario 1, a 1 in 10k chance with lightning occurring once every quarter.Scenario 2, a 1 in... more

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Statistics Math

10/31/22

Use 6-point bins (94-99, 88-93, etc.) to make a frequency table for the set of exam scores shown below. Include columns for relative frequency and cumulative frequency.

9667897876808578788798787791827186787799

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Statistics

10/31/22

Conditional Probability

It is known that the event A and B are Mutually exclusive and that P(A)= 0.56 and P(B)=0.11 find P(A and B)?

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Interpret the lower quartile

Find and interpret the lower quartile and upper quartile of the mental development index.

statistics homework 8.2

Probability Question

express the confidence interval (0.47,0.63) in the form p-hat + or - moe.

Homework help needed I can not figure this one out

Homework question help please

Statistics homework question

Suppose a math class contains 35 students. There are 15 females (four of whom speak Spanish) and 20 males (five of whom speak Spanish). Give all answers as decimals to at least two decimal places.

Statistics help

how to solve this problem

STAT homework help

STAT homework help

For a standard normal distribution, find: P(z > c) = 0.5586 Find c.

What are the sample mean and margin of error?

How to find and calculate the info below

Confidence Interval

How can I combine 12 events with 3 possible outcomes each(pass fail or average) in every possible arrangement

Hi I need help with this stat question

Statistics Question

How did you calculate 98% confident as 2.326?

Statistics Question

Which scenario is best to achieve objective?

Use 6​-point bins ​(94-99​, ​88-93, ​etc.) to make a frequency table for the set of exam scores shown below. Include columns for relative frequency and cumulative frequency.

Conditional Probability

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Use 6-point bins (94-99, 88-93, etc.) to make a frequency table for the set of exam scores shown below. Include columns for relative frequency and cumulative frequency.