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Suppose an x distribution has mean μ = 4. Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81.
a) What is the value of the mean of each of the two x distributions?
At the 0.05 significance level, can we conclude that the mean waiting time at the Warren Road MacBurger is less than 3 minutes?
a small cohort study is conducted in 13 patients with an aggressive cellular disorder linked cancer. the clinical
let y be a random variable with a density function given byfy 32y2 -1ltylt1fy 0 elsewherefind the density fuction
To find z-score and required probabilities based on Normal distribution. Assume that childrens weekly allowances are normally distributed in the population.
the following data show samples of three chain stores in three different locations in one town and the amount of
Your financial advisor sees this and tells you there is a 100% chance XYZ stock will gain over the 2-month period. Would you continue to use this financial advisor? Explain.
one of your companys products a flux capacitor is known to have an exponential failure time distribution with a mean
Over a 20 year period, the average grade point average of applicants to our graduate program has been found to be 3.27. This year the mean grade point average of the 57 students applying to our graduate program is 3.53
Calculate estimated Cohen's d to measure size of treatment effect.
Assume the distribution of ages of homes follow an approximately normal distribution. Show all the seven steps and include the p-value.
Draw to scale a time series graph representing and using the ratio-to-moving-average method, determine the quarterly seasonal indices.
After treatment is administered to individuals in sample, sample mean is found to be M = 55. Determine Cohen's d measure effect size for both tests (σ = 20 and σ = 10).
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