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An engineering research center claims that through the use of a new computer control system, automobiles should achieve, on average, an addition 3 miles per gallon of gas. A random sample of 100 automobiles was used to evaluate this product. The sample mean increase in miles per gallon achieved was 2.4, and the sample standard deviation was 1.8 miles per gallon. Test the hypothesis that the population mean is at least 3 miles per gallon. Find the p-value for this test, and interpret your findings
Perform a factor analysis on the three variables shown in question 2 above. What do conclude about the factors? Perform another factor analysis that includes the new variable, change in external events. What do you conclude?
Scientists, researching large woody debris (LWD), surveyed the number of LWD pieces from aerial photos taken annually for the past 35 years at two different sites. Over the 35 years of photos examined, the first site had a mean number of LWD pieces p..
Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to incr..
Universal Burger is concerned about product waste, so they sampled their burger waste record from the past year with the following results: Number of Burgers Discarded During a Shift: 2, 16, 4, 12, 19, 29, 24, 7, 19, 22, 14, 8, 24, 31, 18, 20, 16, ..
Determine whether the given value is a statistic or a parameter.
The following data shows the position (x), the speed (v), and the deceleration (v2) of a car from the moment that driver hit the break until the moment that the car came to a stop. Required: Please utilize an Excel spreadsheet to find the trend of de..
How much of each product do you recommend be produced that you believe maximizes revenue? How much revenue would be made if they followed your recommendation?
M&M's weigh 0.86 grams on average with SD = 0.04 grams, so the coefficient of variation is 0.04/0.86 0.047. Suppose that we decide to label packages by count rather than weight. The system adds candy to a package until the weight of the package excee..
Examine the skewness and kurtosis values for each dependent variable, examining the histograms and examine the Shapiro-Wilks' results and What is the outcome of the multivariate tests
Choose a research question that can be addressed using a t-test. Ensure your research question allows you to collect data to analyze. Devise a plan to collect your data
How to calculate the sample size? i want to know the needs and wants of the people who buy some products in the asian supermarkets in the netherlands, so i decide to make interview with them , but firstly i need to calculate how many people s..
1. if the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours
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