Mound-shaped and symmetric

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August undefined, 2024

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 … Nettet26. mar. 2024 · Key Takeaway. The Empirical Rule is an approximation that applies only to data sets with a bell-shaped relative frequency histogram. It estimates the proportion of the measurements that lie within one, two, and three standard deviations of the mean. Chebyshev’s Theorem is a fact that applies to all possible data sets.

Solved A random sample of 25 values is drawn from a Chegg.com

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. 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) french president and first lady

2.8: Measures of the Spread of the Data - Statistics …

NettetStatistics and Probability questions and answers. 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 24.6 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 ... Netteta) 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 ... Nettetthe students would be approximately mound shaped with a mean of 40 minutes and a standard deviation of 6 minutes. Approximately how long should be allotted for the examination if the professor wants almost all, say 97.5%, of the class to finish? 40 + 2 x 6 = 52 min 6. Suppose the mean and SD are 74 and 10, respectively. fast ones

Solved a) If we have a distribution of x values that is Chegg.com

other independent random sample of basic consumer Chegg.com

NettetThis problem has been solved! A random sample of 36 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 9 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 8.5. NettetExplain 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 … fast one imile walk with leslie sansoneNettetYes, 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. faston filter

"NettetQuestion: 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 … " - Mound-shaped and symmetric

Mound-shaped and symmetric

What does a mound-shaped distribution mean?

Netteta) 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. NettetQuestion 5 1 / 1 point 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 27.4 mpg and a standard deviation of 10.2 mpg. If 29 such cars are tested, what is the probability the average mpg achieved by these29 cars will be greater than 29?

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Nettet3. apr. 2024 · Answer: 0.121 Step-by-step explanation: Given : The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound … 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 ...

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 … NettetA specific type of symmetrical distribution, also known as a bell-shaped distribution Empirical Rule On a normal distribution about 68% of data will be within one standard deviation of the mean, about 95% will be within …

NettetI. t distributions are also mound shaped and symmetric II. t distributions are more spread out than the normal distribution III. As degrees of freedom increase, the … 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

NettetQuestion: 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? place your 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. french president and melaniaNettetSuppose 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 … fast one road race french president electionNettetQuestion 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 … french president hollandNettetThe 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? faston f1 f2NettetQuestion: when a distribution is mound-shaped symmetrical, what is the general relationship among the values on the mean, median, and mode? The mean is less than … french president elected for how many yearsNettetA 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 … french president and his wife pictures