945 Answered Questions for the topic Statistics Question

Statistics Question

08/05/14

a)explain how to interpret the result of this study and make a conclusion. b) what does the phrase "the confidence level for this study is 95% mean?
For the confidence interval ($61,$97), indentify the mean and margin of error.  A sample population of 300 subjects was selected by taking a simple random sample of lunch reciepts from the colleges... more
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Statistics Question

08/04/14

find the sample mean and standard deviation
find a sample mean and  sample standard deviation for the data set of 41, 37, 57, 47, 31, 31, 41, 37, 57,27,47,41,45
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Statistics Question

08/04/14

help me please
A 28-year-old man pays $165 for a one-year life insurance policy with coverage of $140,000. If the probability that he will live through the year is 0.9994, what is the expected value for the... more
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Statistics Question

08/01/14

Statistics help
You do not need to type in the formulas. Indicate the n and p for the Binomial setting and describe the steps taken to solve the problem   The Federal Bureau of Investigation (FBI) trains sniffer... more
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Statistics Question

07/19/14

See below.
An experiment tests whether or not dogs can detect cancer by sniffing 7 urine vials, one of which was from a cancer patient. When the hypothesis is tested that the dogs randomly guess, H0: p = 1/7,... more
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Statistics Question Statistics

07/16/14

how do i find this answer
During September, the average temperature of Laurel Lake is 64.2° and the standard deviation is 3.2°. Assume the variable is normally distributed. For a randomly selected day in September, find the... more
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Statistics Question Statistics

07/14/14

The mean consumption of beef at the turn of the century was 70 pounds per person per year in the US. A sample of 32 people taken this year yielded the followin
The mean consumption of beef at the turn of the century was 70 pounds per person per year in the US.  A sample of 32 people taken this year yielded the following data, in pounds, on last years beef... more
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Statistics Question

07/03/14

What is the relevant statistic?
In an August 2012 Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through... more
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Statistics Question

06/19/14

Need help with statistic Question (Please show all steps)
A variable is normally distributed with mean 68 and standard deviation 10. Find the percentage of all possible values of the variable that:a. Lie between 73 and 80b. Are at most 90
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Statistics Question

06/19/14

Need help with statistic Question
Determine the area under the standard normal curve that lies between:a. -0.88 and 2.24b. -5.1 and 1
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Statistics Question

06/16/14

A distribution is positively skewed. Which is the most probable order, from largest to smallest, for the three measures of central tendency?
MY WRONG ANSWER: mean, median, mode . CHOICES: mean, median, mode                 mode, median, mean                 mean, mode, median                 median, mean, mode   thank you !
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Statistics Question Probability & Statistics

06/06/14

I have some data on religious affiliation and likelihood to cheat and I am in a debate with a friend about what can be concluded from this information.
Given the following information, what can we conclude.    Religious affiliation in the United States(Rounded)   Evangelical Protestant 26% Catholic                     24% Mainline Protestant... more
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Statistics Question

05/15/14

Finding standard deviation
How do I calculate the standard deviation when given the mean and percent of area that lies to left of a given value?   Specifically mean=10.8 and 15% of area lies to the left of 9.3.  What is the... more
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Statistics Question

05/04/14

i need to find the 10%condition of this:
i need to find the 10%condition of this: 33% of 75 name brand chickens are contaminated and 45% of 75 generic chickens are contaminated, what is the 10% condition?
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Statistics Question Statistics Stats

04/22/14

What is the probability that a random sample of 17 persons will exceed the weight limit of 3,434 pounds?
The weight of people in a small town in Missouri is known to be normally distributed with a mean of 186 pounds and a standard deviation of 29 pounds. On a raft that takes people across the river, a... more
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Statistics Question Statistics Elementary Statistics

04/21/14

Please help with my Statistics Assignment?
1. Compute for the mean, median, and mode of the lengths of mosquitoes' lives in seconds after being sprayed with Insecticide A.   13     14     23     22     16     25     14     25     17    ... more
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Statistics Question Statistics Elementary Statistics

04/21/14

Please help to my Statistics question?
I'm getting confused about this things: 1. My teacher said that Nominal,Ordinal,Interval and Ratio has their own appropriate measures of location. for example: For Nominal the appropriate measures... more
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Statistics Question

04/20/14

Assume s is known. What are the critical values for testing H?: µ=200 against H¹: µ ? 200 with a = 0.04 ?
Assume σ is known. What are the critical values for testing Hο: µ=200 against H¹: µ ≠ 200 with α = 0.04 ?a. ±1.41b.±2.05c.±1.67d.±1.75
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Statistics Question

04/01/14

what is the probability that a randomly slected pregnancy lasts less than 172 days?
The mean being 176 days and the standard deviation being 12
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Statistics Question

03/24/14

1. Find B if P=97 and R=77 7/9%. 2. Find P if R =29% and B=300
These are two different questions.
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Statistics Question

03/24/14

A company purchased 10,000 pairs of men slacks for $19.36 per pair and marked them up $22. 83. What was the selling price of each pair of slacks? Use the formul
There are no additional details
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Statistics Question

03/24/14

A recipe uses 4 cups of flour to 1 1/8 cups of milk. If you have 2 cups, how much milk should you use?
I need to answer with an integer or simplified fraction
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Statistics Question

03/23/14

A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90.
the scores are normally distributed,   what proportion of scores fall between 300 and 400?
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Statistics Question

03/23/14

how to construct a histogram and percentage polygon
how do i do this given a set of data in excel
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Statistics Question

03/23/14

how to find the true population mean or population proportion in continuous probability distribution?
create a new worksheet on excel document and create worksheet probability depending on major assignment the population mean for goals scored by FIFA soccer player  
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