According to the U.S. Department of Labor, the average American household spends $639 on household supplies per year. Suppose annual expenditures on household supplies per household are uniformly distributed between the values of $253 and $1,025.What are the standard deviation and the height of this distribution? What proportion of households spends more than $850 per year on household supplies? What proportion of households spends more than $1,200 per year on household supplies? What proportion of households spends between $350 and $480 on household supplies?
Answer to relevant QuestionsDetermine the probabilities for the following normal distribution problems.a. µ = 604, σ = 56.8, x ≤ 635b. µ = 48, σ = 12, x < 20c. µ = 111, σ = 33.8, 100 ≤ x < 150d. µ = 264, σ = 10.9, 250 < x < 255e. µ = 37, ...Suppose you are working with a data set that is normally distributed, with a mean of 200 and a standard deviation of 47.Determine the value of x from the following information.a. 60% of the values are greater than x.b. x is ...Use the test µ ± 3σ to determine whether the following binomial distributions can be approximated by using the normal distribution.a. n = 8 and p = .50b. n = 18 and p = .80c. n = 12 and p = .30d. n = 30 and p = .75e. n = ...Determine the mean and standard deviation of the following exponential distributions.a. λ = 3.25b. λ = 0.7c. λ = 1.1d. λ = 6.0Assume a normal distribution and find the following probabilities.a. P(x < 21 | µ = 25 and σ = 4)b. P(x ≥ 77 | µ = 50 and σ = 9)c. P(x > 47 | µ = 50 and σ = 6)d. P(13 < x < 29 | µ = 23 and σ = 4)e. P(x ≥ 105 | µ ...
Post your question