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"...
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"...
You are testing the claim of “The Big Cookie” Company that it puts 20 chocolate chips in its big cookies. Many consumers have complained that they have been short changed. Test the claim from the...
I have the following problem and can't figure it out. A mileage test is conducted for a new car model, the “Pizzazz.” Thirty random selected Pizzazzes are driven for a month and the...
The lengths of turtles in a park are normally distributed with a mean of 21.6 inches and a standard deviation of 4.4 inches. What is the percentile rank of a turtle whose length is 17 inches?...
Information We then calculated the Tukey confidence intervals for the three groups. Grouping Information Using Tukey Method Shelf N Mean Grouping 2 21 9.619 A 3...
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...
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...
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...
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...
The average time a customer spends waiting in the check-out line at Wal-Mart is seven minutes. If wait times are independent and constant, what is the probability the customer will spend between eight...
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 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...
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...
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...
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...
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...
I have three independent variable conditions with 14 participants per group. Here are descriptive statistics: Group A: Mean .93, SD .62, Median 1, Mode 1 Group B: Mean .50, SD...
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...
Question Information Do grocery stores shelve breakfast cereals (Frosted Flakes, etc.) aimed at children on the third (bottom) shelf and healthier cereals on higher shelves? We have...