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Anya gathered a random sample of bags of potato chips from a popular company. She calculated data on different variables. For one data that she collected, she constructed a circle graph. Which of the following variables did she use?
Price of bag of potato chips Number of chips in the bag of potato chips Weight of bag of potato chips Flavor of potato chips
Using standard normal table, show critical value for left-tailed test with α = 0.02.
a class survey in a large class for first-year college students asked about how many minutes do you study on a typical
Scores on the Critical Reading part of the SAT college entrance test in a recent year were roughly Normal with mean 997.5 and standard deviation 218.
For a car travelling at 30 miles per hour, the mean stopping distance is 50 feet with a standard deviation is 8 feet, with the stopping distances
The summary statistics were n = 32, x‾ = 22.4. Is there any evidence to suggest the fertilizer improves the thickness of an average lawn? Assume σ = 2.7 and use a = 0.005.
What are the dichotomous outcomes for the related-samples sign test? Explain how to interpret the test statistic T.
Assuming that the difference of each pair is coming from an approximately normal distribu- tion, test if there is any difference in the individuals' driving ability under the two conditions. Use α = 0.05.
write down the pdf for each of the following distributions then sketch the distributions on the axes provided be sure
A consumer organization tested two paper shredders, the Piranha and the Crocodile, designed for home use. Each of 10 randomly selected volunteers shredded 100.
What role do you feel science should play in our society? Should there be limits set on what scientist can do, and if so, what limits would you set.
Give and interpret the 95% confidence intervals for males and females on the HEIGHT variable. Which is wider and why? Give and interpret the 99% confidence intervals for males and females on the HEIGHT variable. Which is wider and why
The table gives some hypothetical data for number of hours of video games played in a day and BMI (body mass index) for some young teenagers.
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