The mean income of a group of sample observations is $500: the standard deviation is $40....
The mean income of a group of sample observations is $500; the standard deviation is $40. According to Chebyshev’s theorem, at least what percent of the incomes will lie between $400 and $600? Percent of the incomes %
the mean monthly income students is $500,according to chebyshev‘s theorem,at least 75% of the incomes in this group will be between $400 and $600. what is the standard deviation?
Exercise 52: A consumer watchdog organization is concerned about credit card debt. A survey of 10 young adults with credit card debt of more than $2,000 showed they paid an average of just over $100 per month against their balances. Listed below is the amounts each young adult paid last month. 110 116 103 93 99 113 87 101 109 104 Determine the sample standard deviation. [answer is the same using STDEV or STDEV.S] Exercise 54: The mean of a...
Consider a sample with a mean of 40 and a standard deviation of 5. Use Chebyshev's theorem to determine the percentage of the data within each of the following ranges (to the nearest whole number). 20 to 60, at least ? % 15 to 65, at least ? % 31 to 49, at least ? % 27 to 53, at least ? % 24 to 56, at least ? %
Q2. A statistics practitioner determined that the mean and standard deviation of a sample of 500 observations were 120 and 30, respectively. Based on the 68%-95%-99.7% empirical rule, what can you say about the proportions that lie between (1) 90 and 150? (2) 60 and 180? (3) 30 and 210?
. 21 - Calculate the sample mean, the standard deviation of the sample mean, and determine its distribution for varying cases where n is small or large and the population is or is not, normally distributed. Household incomes are right-skewed, because most households earn under $150,000 per year, but a minority earn much, much more. Suppose you wanted to determine what the average household income is in central Illinois. In order to do this, you take a simple random sample...
The distribution is normal, the mean is 500 and the standard deviation is 100. What percent of counts will lie between 600 and 700? 97.72 13.59 0.9772 0.1359
The mean of a normal probability distribution is 500; the standard deviation is 14. a. About 68% of the observations lie between what two values? Value 1 Value 2 b. About 95% of the observations lie between what two values? value a Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Value 2
Consider a sample with a mean of 50 and a standard deviation of 6. Use Chebyshev's theorem to determine the percentage of the data within each of the following ranges (to the nearest whole number) a. 40 to 60, at least %o b. 25 to 75, at least %o С. 41 to 59, at least %o d. 37 to 63, at least %o e. 32 to 68, at least
According to Chebyshev's theorem, at least what percentage of the observations in a data set will lie within three standard deviations of the mean? a. 99.7% O b, 89% ?c.68% O d, 9496