Mound-shaped and symmetric
NettetThe manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound shaped and symmetric with mean u = 25.9 mpg and standard deviation o=9.5 mpg. If 30 such cars are tested, what is the probability the average mpg is less than 23 miles per gallon? Expert Answer 100% (1 rating) 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?
Mound-shaped and symmetric
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NettetIf the distribution of monthly bills can be considered mound-shaped and symmetric, what percentage of homes will have a monthly bill of more than $85 and less than This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer NettetThe distribution of dates was more or less mound-shaped and symmetric about the mean. Use the empirical Question: At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort to …
Nettet- symmetric, mound-shaped - about 68% within 1 std deviation - about 95% within 2 std deviations - about 99.7% within 3 std deviations What is the percentile rank? The … NettetFinal answer. Assume that the distributions of percentage foreign revenue are mound-shaped and symmetric for these two company types. (a) Use a calculator with mean and standard deviation keys to calculate xˉ1′s1′xˉ2′ and s2. (Round your answers to four decimal places.) xˉ1 = s1 = xˉ2 = s2 = % % % % lower limit upper limit % % have a ...
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. NettetA random sample of 16 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. (a) Is it appropriate to use a Student's t distribution? Explain.
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 distribution shown at the conclusion of the last section, described as a bell-shaped or mound-shaped curve or a normal distribution, is just one example of a shape that a … female music artists 2022NettetA mound is a heaped pile of earth, gravel, sand, rocks, or debris.Most commonly, mounds are earthen formations such as hills and mountains, particularly if they appear artificial.A mound may be any rounded area … definition of vavasorNettetSuppose that the distribution of weekly water usage for single-family homes in a particular city is mound shaped and approximately symmetric. The mean is 1,400 gallons, and the standard deviation is … female music artist namesNettetQuestion: other independent random sample of basic consumer product companies (Goodyear, Sarah Lee, H.J. Heinz, Toys 'R' Us) gave the following information. sume that the distributions of percentage foreign revenue are mound-shaped and symmetric for these two company types. (a) Use a calculator with mean and standard deviation keys … female music artists 2021Netteta) The sampling distribution of sample mean is approximately normal, mound-shaped, and symmetric for n> 30 or n = 30. b) The expected value of the sample mean, X, is always the same as the expected value of X, the distribution of the population from which the sample was taken. female movie stars of the fiftiesNettetExplain how the relationship between the mean and median provides information about the symmetry or skewness of the data's distribution. The mean is affected by extreme … female music artists a zNetteta) If we have a distribution of x values that is more or less mound-shaped and somewhat symmetrical, what is the sample size n needed to claim that the distribution of sample means x from random samples of that size is approximately normal? n ≥______ (b) If the original distribution of x values is known to be normal, do we need to make any ... definition of vector in science