NettetMath Statistics A random sample of 25 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 14 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the claim that the population mean is 13.5. NettetThe manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of 25.9 mpg and a standard deviation of 9.5 mpg. If 30 such cars are tested, what is the probability the average mpg achieved by these 30 cars will be greater than 28?
2.2.7 - The Empirical Rule STAT 200 - PennState: …
NettetQuestion 978190: The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of 25.9 mpg and a standard deviation of 9.5 mpg. If 30 such cars are tested, what is the probability the average mpg achieved by these 30 cars will be greater than 28? Answer … NettetFind step-by-step Statistics solutions and your answer to the following textbook question: A random sample of 25 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 10 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the claim that the population mean is 9.5. cpt fowler tenotomy finger
Solved when a distribution is mound-shaped symmetrical, what
Nettet19. jul. 2024 · populations. The Empirical Rule is a rule of thumb that applies to data sets with frequency distributions that are mound-shaped and symmetric, as shown below. mean, i.e., within the interval (x – 5,+ s) for samples and (w – 0,4 + o) for populations. NettetAboutTranscript. When we describe shapes of distributions, we commonly use words like symmetric, left-skewed, right-skewed, bimodal, and uniform. Not every distribution fits one of these descriptions, but they are still a useful way to summarize the overall shape of … NettetYes, because the x distribution is Question: A random sample of 36 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 12 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the claim that the population mean is 11.5. distance from st louis to champaign