1,011 Answered Questions for the topic Statistics Question

Statistics Question Homework Tips

03/26/15

Statistics Problem Need Help!
Suppose the amount of a popular sport drink in bottles leaving the filling machine has a normal distribution with mean 101.5 ml and standard deviation of 1.6 ml.   A.  If the bottles are labeled... more
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Statistics Question Statistics Homework Tips

03/26/15

Statistics Homework Help!
A random sample of size 2 is selected, with replacement, from the set of numbers (0,2,4)   A. List all possible samples and evaluate X(with Bar) and S2   B. Determine the sampling distribution... more
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Statistics Question Statistics Homework Tips

03/26/15

Statistics Homework Help!
The diameter of of hail hitting the ground during a storm is normally distributed with a mean of .5 inch and a standard deviation of .1 inch.  What is the probability that:   A)  A hailstone... more
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Statistics Question Statistics Helping Others

03/26/15

Statistics Problem Need Help!
The time it takes a symphony orchestra to play Beethovens Ninth Symphony has a normal distribution with a mean of 64.3 minutes and a standard deviation of 1.15 minutes. The next time it is played... more
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Statistics Question Math Statistics Math Help

03/26/15

Need some help on a statistics problem
1) CBS and the NYT conducted a national poll of 1048 randomly selected 13 to 17-year olds and counted how many owned smart phones. The reporters were trying to decide whether more than half of... more
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Statistics Question

03/26/15

On a reading comprehension test, it would be preferable to achieve a z score of
On a reading comprehension test, it would be preferable to achieve a z score of a) 2.34 b) 3.50 c) 0.00 d) 1.00
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Statistics Question

03/25/15

If the normal curve is used to describe the distribution of IQ scores ..??
If the normal curve is used to describe the distribution of IQ scores for all currently enrolled students in U.S. colleges and universities, all students are identified with the a) smooth normal... more
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Statistics Question

03/25/15

statistics question
For year 2003, the SAT test scores were normally distributed with a mean of 1050 and a standard deviation of 150.What percentage of the SAT scores is above 1050?
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Statistics Question

03/25/15

Addition Rule and when do you use the Multiplication Rule in probablity , What is the difference?
Im currently trying to understand addition and multiplication probability I just need some assistance for a clearer understanding
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Statistics Question Statistics

03/25/15

STAT HELP Question
In the 2010 World Cup, Paul the Octopus (in a German aquarium) became famous for being correct in all eight of the predictions it made, including predicting Spain over Germany in a semi-final... more
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03/24/15

Help finding the sample size! Statistics
A paint manufacturer uses a machine to fill gallon cans with paint.   a)The manufacturers wants to estimate the mean volume of paint the machine is putting in the cans within 0.25 ounces.... more
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Statistics Question

03/23/15

statistics
he amount of coffee that a filing machine puts into an 8 ounce jar is normally distributed with a mean of 8.2 ounces and a standard deviation of 0.18 ounce what is the probability that the sampling... more
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Statistics Question

03/19/15

Probability of draws without replacement. please help! I'm stuck!
An urn contains red balls and white balls. If Frank chooses balls at random from the urn, what is the probability that he will select red balls and white balls? Round your answer to decimal... more
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Statistics Question

03/19/15

Probability of Draws
A history class is comprised of female and male students. If the instructor of the class randomly chooses students from the class for an oral exam, what is the probability that female students... more
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Statistics Question

03/19/15

Probability
An urn contains white balls and red balls. If Juan chooses balls at random from the urn, what is the probability that he will select white balls and red balls? Round your answer to decimal... more
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Statistics Question

03/19/15

Probability of draws
A history class is comprised of female and male students. If the instructor of the class randomly chooses students from the class for an oral exam, what is the probability that female students... more
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Statistics Question

03/18/15

Statistics Question
A machine produces washers which must satisfy certain size and quality specifications. It produces a defective washer with probability p. Every hour a sample of ten washers is inspected and, if two... more
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Statistics Question

03/17/15

Statistics
A true false test contains 8 questions. In how many different ways thetest can be completed?
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Statistics Question

03/17/15

Statistics
8 people are running a race. How many results we can have, if first,second, and third place have to be filled?
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Statistics Question

03/17/15

Statistics
Five different books are on a shelf. In how many different ways couldyou arrange them?  
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Statistics Question

03/17/15

A peculiar die has the following properties
A peculiar die has the following properties: on any roll the probability of rolling either a , a , or a is , just as it is with an ordinary die. Moreover, the probability of rolling either a , a ,... more
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Statistics Question

03/15/15

with a mean of 166 cm and a standard deviation of 9 cm. Using the Epirical Rule, what is the approximate percentage of the men between 157 cm and184 cm?
heights of men on a baseball team have a bell-shaped distribution with a mean of 166 cm and a standard deviation of 9 cm. Using the Epirical Rule, what is the approximate percentage of the men... more
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Statistics Question

03/15/15

Because it's affected by every observation in the distribution, the mean is particularly sensitive to ..??
Because it's affected by every observation in the distribution, the mean is particularly sensitive to a) any extreme observation. b) large numbers of observations. c) the large subset of... more
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Statistics Question

03/15/15

Unlike the mode or median, the mean is affected by .. ??
Unlike the mode or median, the mean is affected by a) only those observations that are middle-ranked. b) only those observations that occur most often. c) all those observations that are... more
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Statistics Question

03/15/15

To describe the average daily load of clients for psychotherapists working at a mental heath clinic, a spokesperson reports ..??
To describe the average daily load of clients for psychotherapists working at a mental heath clinic, a spokesperson reports a mean load of 5.2 clients and a median load of 7.5 clients. This implies... more
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