1,012 Answered Questions for the topic Statistics Question

Statistics Question

08/07/15

mass fom a machine have a mean of 200g and standard deviation of 2g.find the probability that (1)package from machine weighs less than 196g(2)weights198.5n199.5
probability
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Statistics Question

08/06/15

69 + 29 = Hats, balloons, whistles, canes and horns
I don't know how to sole this, Is it a valid problem or a trick question?
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Statistics Question

08/01/15

Why is the SD in (d) which is 12,10,9,8, 6,45 is larged compared to 12,10,9,8,6
Why is the Standard deviation which is 12, 10, 9, 8, 6, 45, so large compared to Standard deviation 12,10,9,8,6
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Statistics Question Statistics

07/29/15

What is your conclusion for the following claim: Claim: p = 0.34, P-value = 0.014, and a (alpha) = 0.05.
What is your conclusion for the following claim: Claim: p = 0.34, P-value = 0.014, and α (alpha) = 0.05.       A. there is not enough information to draw a conclusion  B. fail to reject null... more
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Statistics Question Statistics Symbolic Form

07/29/15

For the following statement, express the claim in symbolic form (null and alternative hypotheses): At least half the students at this school carpool to campus.
For the following statement, express the claim in symbolic form (null and alternative hypotheses): At least half the students at this school carpool to campus.       Ho: p = 0.50 and Ha: p >... more
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Statistics Question

07/28/15

Finding the standard deviation.
The probability that a radish seed will germinate is 0.7. A gardener plants seeds in batches of 17. Find the standard deviation for the number of seeds germinating in each batch.
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Statistics Question

07/28/15

A trial is conducted in an area that has a 30% minority population. The jury pool of 30 prospective jurors has only 6 minority representatives.
The defense attorney claims that this is evidence that the jury pool was not selected randomly. Use the binomial distribution to evaluate the defense attorney’s claim of bias. Make sure that you... more
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Statistics Question

07/28/15

Find the percentile for the data value. Data set: 55, 38, 30, 66, 67, 68, 44data value: 55
Find the percentile for the data value. Data set: 55, 38, 30, 66, 67, 68, 44data value: 55  
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Statistics Question

07/28/15

Conclusion for following claim
Claim: p = 0.34, P-value = 0.014, and α (alpha) = 0.05.
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Statistics Question

07/28/15

IQ test has a mean of 100 and a standard deviation of 15.ant to be 95% certain we are within 1.5 IQ points of the true mean. Determine the required sample size.
No description needed.
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Statistics Question

07/27/15

Population mean
The computed test statistic (rounded to two decimal places) for a claim about a population mean given "x - bar" = 143, "mu" = 150, "lowercase sigma" = 5.6, and n = 10, assuming a normal population.
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Statistics Question

07/21/15

find the probability
the amount of milk produced each day by  a herd of cows is uniformly distributed between 44.6 gallons and 58.8 gallons. find the probability that the amount of milk produced is between 45.9 gallons... more
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Statistics Question

07/20/15

normal distribution to approximate a binomial distribution.
normal distribution to approximate a binomial distribution.2,881 adults were selected for a survey. if the probability, p, of a response to the survey is 71.85% what would be the probability that... more
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Statistics Question

07/17/15

Find the indicated probability using the standard normal distribution. ?P(zless than<negative 1.13-1.13?)
I am stuck!
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Statistics Question

07/17/15

Find the indicated area under the standard normal curve. Between z=-1.35 and z=1.35.
I need to know how to do it step by step so that I can do the other problems.
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Statistics Question

07/12/15

Statistics question
The furniture is produced on a weekly basis and stored in the warehouse until the end of the week, whenit is shipped out. The warehouse has a total capacity of 650 pieces of furniture. Each sofa... more
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Statistics Question

07/06/15

A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles.if a marbles is randomly selected from the bag, what is the probability that it is blue?
Help please  
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Statistics Question Probability & Statistics

06/30/15

please help!
In a recent survey, 15 people preferred milk, 27 people preferred coffee and 18 peoplepreferred juice as their primary drink for breakfast. If a person is selected at random, find theprobability... more
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Statistics Question

06/30/15

Please help!!!
The probability that sue will live on campus and buy a new car is 0.34. If the probability that she will live on campus is 0.53, find the probability that she will buy a new car, given that she... more
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Statistics Question

06/30/15

A box contains 24 syringes, 4 of which are defective. If 4 are used, then what is the probability that at least one syringe is defective?
Not sure how to do probability problems so I need help with them!
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Statistics Question

06/13/15

type I & Type II Erros
Please consider the following statement: “If the decision is to reject a null hypothesis, then we have certainty that the null hypothesis is false.” Please indicate whether this statement is true... more
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06/12/15

Probability, Random Variables
Four red cards and four green cards are well shuffled. Cards are drawn, without replacement, until the color of a card drawn matches the color of the first card drawn. Find the average number of... more
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Statistics Question

06/09/15

probability and salary
The mean annual salary of school bus drivers is $26,000 with a standard deviation of $5,000. A) What is the probability of randomly selecting a single driver making under $25,000? I have .4207B)... more
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Statistics Question

06/09/15

central limit theorem
Per capita consumption of Spam in the US is Normally distributed with a mean of 2.3 pounds and a standard deviation of 0.9 pounds. Random sample of 20 people are chosen. Use the Central Limit... more
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Statistics Question

06/06/15

At least what percentage of data must fall within 1.73 standard deviations above/below the mean?
Use Chebyshev’s Theorem to answer the following questions:
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