07/10/20

How much money do winners go home with from the television quiz show Jeopardy?

How much money do winners go home with from the television quiz show Jeopardy? To determine an answer, a random sample of winners was drawn and the amount of money each won was recorded and listed... more
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03/01/20

please help me I need to pass
You have one type of nut that sells for $3.10/lb and another type of nut that sells for $5.70/lb. You would like to have 5.2 lbs of a nut mixture that sells for $4.00/lb. How much of each nut will... more
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02/23/20

Determine P(5 < X ≤ 8)
A. F(8)-F(5)B. F(8)-F(4)C. F(7)-F(5)D. F(7)-F(4)
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11/20/19

What is the value of the expression below when z=7 ?
what is the value of the expression below when 2=7?
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11/03/19

URGENT HELP NEEDED... Statistics M/C questions
1: To estimate the average SAT score of incoming freshmen, the Admissions office collected the scores of fifty randomly chosen students. From previous years, they know that the population standard... more
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11/03/19

need help for Stat question
If sample data is such that for a one-tailed test of μ you can reject H0 at the 1% level of significance, can you always reject H0 for a two-tailed test at the same level of significance? Explain... more
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09/07/19

Ordinary linear regression

Suppose we have data from a health survey conducted in year 2000. Data were obtained from a random sample of 1200 persons aged 25-64.An OLS linear regression analysis was carried out in the... more
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08/30/19

Need help with Linear equations with unknown coefficients

—cz+6z=tz+83 solving for z
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08/18/19

Can you reject the null hypothesis at a=.05?
Ms Z has two groups of band students. She asks Group 1 to use her new embouchure strengthening cream before practice and asks Group 2 to practice as usual. Can you reject the null hypothesis at... more
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08/08/19

Jenny has been given a list of bands and asked to place a vote. Her vote must have the names of her favorite and second favorite bands from the list. How many different votes are possible?

Jenny has been given a list of 6 bands and asked to place a vote. Her vote must have the names of her favorite and second favorite bands from the list. How many different votes are possible? 
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07/26/19

finding z score and percentile rank
A researcher found that the rate of violent confrontations among the population of county jails is equal to 5.7 per 100 prisoners, with a standard deviation of 2.9. Enter the following data into... more
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06/14/19

statistics help

This question is an extension of the ICE distributed in class.One of the colleges in Florida is called Aviator College of Aeronautical Science and Technology. Its annual tuition and fees were... more
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06/11/19

homework help please
Tomatoes in Tokyo, Japan cost 738 Yen per kilogram. Tomatoes in Cincinnati cost $1.49 per pound. In which city are tomatoes the better buy? Useful conversion factors:1 US Dollar = 109.5 Japan Yen1... more
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03/16/19

What is the purpose of the standard deviation?
I don't have any knowledge of statistics beyond high school common sense. Why is the standard deviation usually seen in combinatorics textbooks, and why is the standard deviation defined... more
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03/16/17

i need help on this question. ive been on it forever
Robin has 5 cups of cream to make cakes. But she needs 2 more cups of cream.So, she added 2 cups. If an equation were written to represent this situaation, what does the slope tell us about the... more
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03/26/15

It's most correct to view the normal curve as
It's most correct to view the normal curve as a) a batch of observations. b) a frequency distribution. c) an observed frequency distribution. d) a theoretical frequency distribution.
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03/21/15

Samples of data and population
 I understand that all samples of data are going to vary from time to time and some of them maybe the same, if the population is higher in one distribution than the other. Do you think that sample... more
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03/15/15

Which average -- the mode, median, or mean -- probably serves as the basis for the following statement? The average college professor is a white male. ..??
1. Which average -- the mode, median, or mean -- probably serves as the basis for the following statement? The average college professor is a white male. a) mode b) median c) mean d) impossible... more
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02/02/15

Statistical Help
In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garlic in a processed tablet form.  Cholesterol levels were mearsured before and after the... more
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02/02/15

Statistical Help
A survey found that women heights are normally distributed with mean 63.4 in. and standard deviation 2.5 in. A branch of the military requires women's heights to be between 58in and 80 in.A) Find... more
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01/31/15

College Math
Mitch and Bill are the same age. When Mitch is 25 years old, he begins depositing $100 every month into a long-term savings plan. He consistently makes these deposits for 10 years, at which point... more
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12/21/14

Statistic Help, and I need it fast
A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at the station needs to know the total amount of airtime for the 40 songs so that time can also be... more
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12/11/14

Need help for this exercise
  Please read the following narrative and answer the following questions:Researchers compared urinary bacteria levels of elderly women who drank 10 ounces of a juice drink containing cranberry... more
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12/05/14

Suppose the FDA wishes to conduct a hypothesis test to evaluate the null hypothesis that the population mean is 260 milligrams. Conduct this hypothesis test
Suppose the FDA wishes to conduct a hypothesis test to evaluate the null hypothesis that the population mean is 260 milligrams. Conduct this hypothesis test for the FDA. Please conduct this... more
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08/09/14

a random sample of 40 students has a test score average with a standard deviation of 11.1. Find the margin of error c=0.98
A random sample of 40 students has a test score average with a standard deviation of 11.1.  find the margin of error c=0.98
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