970 Answered Questions for the topic Statistics Question

Statistics Question Statistics

03/10/16

Sum of Squares/Statistics
For a statistics problem:I am given the sum of the set of data, and I need to find the sum of squares. How would I be able to do this without knowing each individual score, subtracting it from the... more
Follows • 2
Expert Answers •1
Statistics Question

03/08/16

Binomial Process Question
A series of n independent trials are run for a Binomial Process with probability of success p. If the mean is found to be 2.4 and the variance is 1.7, what is p? (Please answer to 3 decimals of... more
Follows • 2
Expert Answers •1
Statistics Question

03/06/16

Probability Statistics
If I have Mean 7.75What is the standard deviation of the time? (Do not round your intermediate calculations. Round your answer to 2 decimal places.)  
Follows • 2
Expert Answers •1
Statistics Question

03/04/16

Statistics Question
In an application to estimate the mean number of miles that downtown employees commute to work roundtrip each day, the following information is given: n = 20 = 4.33 s = 3.50 Based on this... more
Follows • 2
Expert Answers •1
Statistics Question

03/03/16

What is the chance HRC finds a sample mean between $477 and $527?
Human Resource Consulting (HRC) surveyed a random sample of 60 Twin Cities construction companies to find information on the costs of their health care plans. One of the items being tracked is the... more
Follows • 2
Expert Answers •1
Statistics Question Conditional Probability

03/01/16

Billy takes two tests in his probability and statistics class.
The probability that Billy would pass at least one test is 0.9. The probability that he passes both tests is 0.7. The tests are of equal difficulty (that is, the probability that Billy passes test... more
Follows • 2
Expert Answers •1
Statistics Question

02/29/16

If four patients take the drug, what is the probability that none of the patients will experience side effects?
I have no idea how to answer this question
Follows • 2
Expert Answers •1
Statistics Question

02/28/16

Mean of 158 and a standard deviation of 21. Find the mean and standard error of the mean of this sampling distribution when using random samples of size 5
Normally distributed. Answer choices are A. 158, 5 B. 158, 21 C. 158, 9.39 D. 158, 4.2
Follows • 2
Expert Answers •1
Statistics Question

02/26/16

For a continuous probability distribution, 0 = x = 15. What is P(x > 15)? (Enter an exact number as an integer, fraction, or decimal.) P(x > 15) =
For a continuous probability distribution, 0 ≤ x ≤ 15. What is P(x > 15)? (Enter an exact number as an integer, fraction, or decimal.) P(x > 15) =
Follows • 4
Expert Answers •1
Statistics Question Statistics

02/26/16

Statistics (2). Please Help!
Twelve different video games showing substance use were observed and the duration times of game play? (in seconds) are listed below. The design of the study justifies the assumption that the sample... more
Follows • 3
Expert Answers •2
Statistics Question

02/25/16

Statistics Question
1. There are 23 people at a party. Explain what the probability is that any two of them share the same birthday. 6.3%2. A cold and flu study is looking at how two different medications work on sore... more
Follows • 2
Expert Answers •1
Statistics Question Statistics Probability & Statistics

02/24/16

Statistics Question: Cholesterol levels are normally distributed with a mean of 170 and a SD of 30.
Find the probability a randomly selected individual has a cholesterol level greater than 225.    The answer is = 0.0336 But i am not sure how to find this answer. 
Follows • 2
Expert Answers •1
Statistics Question Statistics Probability & Statistics

02/24/16

Statistics Question: (1) The weight of a sperm whale's brain is NORMALLY Distributed with a mean of 15.5
pounds and a standard deviation of 3.6 pounds. What is the probability that a randomly selected sperm whale has a brain that weighs between 10- 20 pounds?    (2) Same question but what is the... more
Follows • 2
Expert Answers •1
Statistics Question

02/24/16

1.An unfair coin has a probability of coming up heads of 0.65.
An unfair coin has a probability of coming up heads of 0.65. The coin is flipped 50 times. What is the probability it will come up heads 25 or fewer times? (Give answer to at least 3 decimal places).
Follows • 3
Expert Answers •1
Statistics Question Biostatistics

02/23/16

Statistics Question
Assume the average weight of a full-term newborn infant (i.e. 39-40 weeks gestation) in the US is 3400g. Suppose we measure the birth weight of 1000 (full-term) infants born to alcoholic mothers.... more
Follows • 2
Expert Answers •1
Statistics Question

02/23/16

Assume your null hypothesis is that 50.5% of all households currently have Internet access. You take a random sample of 50 households and find that 34 of the ho
 It is for statistics homework. 
Follows • 2
Expert Answers •1
Statistics Question

02/22/16

2. Find x and y so that the ordered data set has a mean of 42 and a median of 35. 17 , 22 , 26 , 29 , 34 , x , 42 , 67 , 70 , y
2. Find x and y so that the ordered data set has a mean of 42 and a median of 35. 17 , 22 , 26 , 29 , 34 , x , 42 , 67 , 70 , y  
Follows • 3
Expert Answers •2
Statistics Question

02/22/16

if a player finished 88 last year and 11 this year what was his percentage of improvement
ranked 88  now ranked 11 what is the percent of improvemnet
Follows • 2
Expert Answers •1
Statistics Question Statistics

02/22/16

how do I find the answer to P(z<-1.26)
I can't seem to figure out how to calculate the answer to this question. I have a few more that I can't seem to get either:   P(Z < -1.26)   P(Z > 0.72)   P(-1.52 < Z < 2.66)  
Follows • 1
Expert Answers •1
Statistics Question

02/18/16

Statistical Forcasting
If I get one response from 374 mailers in 10 days, how many mailers do I need to get one response in 6 days?
Follows • 1
Expert Answers •1
Statistics Question

02/17/16

According to the UCR, 44% of robberies take place on a street or highway.
4. According to the UCR, 44% of robberies take place on a street or highway. By hand, calculate the complete binomial probability distribution for a sample of 4 robberies and answer the following... more
Follows • 2
Expert Answers •1
Statistics Question

02/15/16

What does A denote?
If A denotes some? event, what does Upper A overbarA ?denote? If ?P(A)equals=0.9930.993?, what is the value of ?P(Upper A overbarA?)? If ?P(A)equals=0.9930.993?, is Upper A overbarA ?unusual?
Follows • 2
Expert Answers •1
Statistics Question Statistic

02/15/16

A report based on the Current Population Survey.....
A report based on the Current Population Survey estimates the 1991 median weekly family wage and salary earnings as $664. An approximate 95% confidence interval for the 1991 median weekly earnings... more
Follows • 2
Expert Answers •1
Statistics Question

02/13/16

a pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 13 tablets, then accept the wh
 a pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 13 tablets, then accept the whole batch is there is only one or... more
Follows • 2
Expert Answers •1
Statistics Question

02/08/16

I have no idea how to do stat and have a wooksheet to complete. this is one question
suppose that the systolic blood pressure in a healthy population is normally distributed with µ = 125 and σ2 = 64 mm Hg . What area of the curve is above 125? What area of the curve is below 130?... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.