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Statistics Resources

For a t distribution with n = 17, find the area, or probability to the right of 2.120     0.05   0.025   0.105   none...

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:...

A credit card company wants to see how strong the relationship is between the amount of money a person makes per year and the amount they charge on their credit cards. There are 9 pairs of data...

Use the given information to find the minimum sample size requires to estimate an unknown population mean μ. How many adults must be randomly selected to estimate the mean FICO (credit rating) score...

A) What is the test Statistic? = ____ Round to 3 decimal places B) What is the critical Values= ___ (use the t distribution table)Round to 3 decimal places as needed, Use a comma to separate...

A simple random sample of pages from a dictionary is obtained. Listed below are the numbers of word defined on those pages. Given that this dictionary has 1459 pages with defined words, the claim...

79% of teens own an iPod or other MP3 player. If the probability that both a teen and his or her parent own an iPod or other MP3 player is .43, what is the probability that both a teen and his or...

Suppose you administer a certain aptitude test to a random sample of 9 students in your high school, and the average score is 105. Assume a standard deviation of σ = 15 for the test. We want to test...

A sample of size 36 is taken. Population standard deviation is 3. Population mean is 8. Find the probability that the sample mean salls between 7.8 and 8.2

When rolling dice - I have a number or a set of numbers in mind that I want the dice to total at the end of the roll. I already know that my number or set of numbers has a probability of "hitting"...

I am interested in running an experiment in which 40 samples will be taken. If the samples are processed over a period of two weeks, how many days and samples per day should be tested? How did...

Study A and study B are tangentially related. If study A has an effect size of d = .25 and study B has an effect size of d = 1.08, what does that mean? What are some reasons why study B...

In a study, researchers tracked the number of errors made as participants completed 50 trials of the Stroop color task. All participants made 0, 1, or 2 errors during the 50 trials. Are the results...

Find the area under the standard normal curve which lies a.) to the left of 0.47 b.) to the right of z=-0.06 c.) to the right of z=2.53 d.) to the left of z=-1.31 e.) between z= 0.72 and z=1.59 f...