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Statistics Question Statistics

09/06/17

Statistics Question

On a different test, a test of physical strength, with higher scores representing more physical strength, Annie’s result is a T score of 65 and Sue’s result is a z score of 1.5. According to this... more

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Statistics Question Statistics

09/05/17

What is wrong with this statement?

Upper A report about the decline of Western investment in third world countries included this: "After A report about the decline of Western investment in third world countries included this: "After... more

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Statistics Question Statistics

09/05/17

A particular group of men have heights with a mean of 173 cm and a standard deviation of 77 cm. Richard had a height of 175 cm.

What is the positive difference between Richard 's height and the mean?b.How many standard deviations is that [the difference found in part (a)]?c. Convert Richard 's height to a z score.d.If we... more

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Statistics Question Statistics

09/05/17

Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample dat

39 38 37 29 18 15 13 12 11.7 10.2 The range of the sample data is $nothing million. (Type an integer or a decimal.) The variance of the sample data is nothing. (Round to two decimal places... more

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Statistics Question Statistics

09/05/17

Determine whether the given value is from a discrete or continuous data set.

When a van is randomly selected, it is found to have a weight of 1815.5 kg? It is from a discrete data set because the number of possible values is infinite and countable.B.It is from a... more

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Statistics Question Statistics Variables

09/04/17

What are the 3 variables?

Assume that you have selected 10 students enrolled at your college and have collected data for these three variables: x: number of courses enrolled y: total cost of text books and supplies for... more

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Statistics Question Statistics

09/04/17

Observational or experimental

describe whether the following study would most likely be "observational" or "experimental", and why it would be so.Researchers test two different blood pressure medicines to determine effectivenes.

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Statistics Question

08/25/17

This _____ is one of the scores if there is an odd number of scores?

Answers Option:Means/Mode/Median?

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Statistics Question

08/18/17

what is the difference between a prospective study and a retrospective study

trying to get the difference between prospective and retrospective

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Statistics Question

08/17/17

A spinner has 10 equally sized sections, 1 of which is red and 9 of which are blue. The spinner is spun and at the same time a fair coin is tossed. What is the

A spinner has 10 equally sized sections, 1 of which is red and 9 of which are blue. The spinner is spun and at the same time a fair coin is tossed. What is the probability that the spinner lands on... more

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Statistics Question

08/16/17

An employer interviews 9 people for 5 management positions in a company, and 4 of the 9 people are women. If all 9. are qualified, in how many ways can the empl

An employer interviews 9 people for 5 management positions in a company, and 4 of the 9 people are women. If all 9. are qualified, in how many ways can the employer fill the management positions if... more

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Statistics Question

08/14/17

Reverse statistics problem

In a population of voters, 30% favour an election issue, and 70% do not favour it. In a survey it isfound that 40% of those who favour the issue vote for the ruling party, while 80% of those who... more

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Statistics Question

08/13/17

The area to the right of zequals=negative 1.42−1.42 under the standard normal curve is nothing.

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Statistics Question

08/11/17

An employer interviews 9 people for 6 management positions in a company, and 4 of the 9 people are women. If all 9 are qualified, in how many ways can the empl

An employer interviews 9 people for 6 management positions in a company, and 4 of the 9 people are women. If all 9 are qualified, in how many ways can the employer fill the management positions if... more

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Statistics Question

08/09/17

Calculate test statistic and/or p-value. (Round to 2 decimal places)

Teachers’ salaries in one state are very low, so low that educators in that state regularly complain about their compensation. The state mean is $33,600, but teachers in one district claim that the... more

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Statistics Question Probability & Statistics

08/07/17

Distribution of Sample Mean Question

Suppose the horses in a large stable have a mean weight of 818lbs, and a variance of 3481.What is the probability that the mean weight of the sample of horses would differ from the population mean... more

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Statistics Question

08/05/17

Three research department have 9,10 and 8 members respectively. Each department is to select a delegate and an alternate to represent the department at a confer

Three research department have 9,10 and 8 members respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this be done? more

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Statistics Question

08/05/17

In how many ways can a committee consisting of 2 faculty members and 5 students be formed if there are only 11 faculty members and 12 students eligible to serve

In how many ways can a committee consisting of 2 faculty members and 5 students be formed if there are only 11 faculty members and 12 students eligible to serve on the committee?

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Statistics Question

08/05/17

In how many ways can a committee consisting of 2 faculty members and

In how many ways can a committee consisting of 2 faculty members and 5 students be formed if there are only 11 faculty members and 12 students eligible to serve on the committee?

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Statistics Question

08/05/17

An employee interviews 10 people for 5 technical support positions in a company, and 5 of the 10 of the people are woman. If all 10 are qualified in how many wa

An employee interviews 10 people for 5 technical support positions in a company, and 5 of the 10 of the people are woman. If all 10 are qualified in how many ways can the employer fill the... more

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Statistics Question

08/03/17

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On

On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and... more

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Statistics Question Statistics Null Hypothesis Testing

08/01/17

hypothesis testing

what unit of measure does the test statistic measure?

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Statistics Question F Test

07/31/17

F test for comparing two variances is that both populations are normally distributed. Why would validating these assumptions be a matter of statistical ethics?

The assumption of the F test for comparing two variances is that both populations are normally distributed. Why would validating these assumptions be a matter of statistical ethics? Is validating... more

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Statistics Question Statistics Math Help Math Question

07/29/17

Compare and contrast the following measures of dispersion (range, standard deviation) in terms of what each of these represent and in terms of the relative adva

Compare and contrast the following measures of dispersion (range, standard deviation) in terms of what each of these represent and in terms of the relative advantages/disadvantage of using one over... more

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Statistics Question

07/26/17

Determine the area under the standard normal curve that lies...

Determine the area under the standard normal curve that lies... A. To the left of -2.34 or to the right of 1.645. B. Between -0.88 and 2.55 C. To the left of -1 or to the right of 2 D.... more

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Statistics Question

What is wrong with this​ statement?

A particular group of men have heights with a mean of 173 cm and a standard deviation of 77 cm. Richard had a height of 175 cm.

Listed below are the top 10 annual salaries​ (in millions of​ dollars) of TV personalities. Find the​ range, variance, and standard deviation for the sample dat

Determine whether the given value is from a discrete or continuous data set.

What are the 3 variables?

Observational or experimental

This _____ is one of the scores if there is an odd number of scores?

what is the difference between a prospective study and a retrospective study

A spinner has 10 equally sized sections, 1 of which is red and 9 of which are blue. The spinner is spun and at the same time a fair coin is tossed. What is the

An employer interviews 9 people for 5 management positions in a company, and 4 of the 9 people are women. If all 9. are qualified, in how many ways can the empl

Reverse statistics problem

The area to the right of zequals=negative 1.42−1.42 under the standard normal curve is nothing.

An employer interviews 9 people for 6 management positions in a company, and 4 of the 9 people are women. If all 9 are qualified, in how many ways can the empl

Calculate test statistic and/or p-value. (Round to 2 decimal places)

Distribution of Sample Mean Question

Three research department have 9,10 and 8 members respectively. Each department is to select a delegate and an alternate to represent the department at a confer

In how many ways can a committee consisting of 2 faculty members and 5 students be formed if there are only 11 faculty members and 12 students eligible to serve

In how many ways can a committee consisting of 2 faculty members and

An employee interviews 10 people for 5 technical support positions in a company, and 5 of the 10 of the people are woman. If all 10 are qualified in how many wa

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On

hypothesis testing

F test for comparing two variances is that both populations are normally distributed. Why would validating these assumptions be a matter of statistical ethics?

Compare and contrast the following measures of dispersion (range, standard deviation) in terms of what each of these represent and in terms of the relative adva

Determine the area under the standard normal curve that lies...

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What is wrong with this statement?

Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample dat