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...
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...
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...
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...
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 coffeehouse wishes to see if customers have any preference among 5 different brands of coffee. A sample of 200 customers provided the data below. Calculate the chi-square test statistic χ2 to test...
Hi, I have Standard Error (SE) and R2 data. How can i calculate standard deviation, Average Percentage Relative Error and Average Absolute Percentage Relative Error? Is there...
1. Use the frequency distribution to find the expected value (mean), variance, and the standard deviation. Number of downloads (X) 27 28 30 31 32 Probability (P(X)) 0.15 0.2 0.3 0.25 0.1 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"...
For a fund raiser, the Science and Technology Club is selling raffles at the cost of six raffles for $5.00. It cost the club $250.00 for the prizes and tickets that will be given away. How many raffles...
1. At a raffle, 3000 tickets were sold at $5 a piece for four different prices of $1500, $1000, $500, and $100. Build a probability distribution table with all assigned probabilities. Calculate the...
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 cards...
Out of all of the 2010 murder cases, 28.8% killed by family members, 53% by acquaintance and the remainder by stranger. What's probability that a randomly selected murder victim was killed by stranger...
Thanks! 2. You have $10,000 to invest. After some investigating, you found two investment opportunities. Bond A has a return of 6.5% with a default rate of 2%. Bond B has a return of...
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...
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...
A printing company makes pamphlets that cost $.75 per copy plus $5.00 as a setter's fee. If $80 were spent printing a pamphlet, how many pamphlets were ordered? Could this be set as...
For a 90% confidence level and a sample size of n, the margin of error is approximately 82/the square root of n %. Suppose you conduct a poll using a representative sample of 1000 people...
A coffeehouse wishes to see if customers have any preference among 5 different brands of coffee. A sample of 200 customers provided the data below. Calculate the chi-square test statistic χ2 to test...
Suppose an exam had an average (mean) score of 55% and a standard deviation of 15%. Table 6.3 Curving Grades A 1.5 standard deviations above the mean...