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A vendor of seasonal items wants to purchase a number of Christmas trees for the upcoming season. Based on previous years' records, she estimates demand for Christmas trees at her shop to be a normally-distributed random variable with mean μ = 250 and standard deviation σ = 50. If the purchase price for a tree is po = €30 which she then sells at ps = €50, assuming she cannot recover any value at all from any unsold tree, what is the quantity of trees she should purchase in order to maximize her expected profits?
Several questions will be asked but the main outcome measure of interest will be the percentage of customers who were completely satisfied and plan to return and the average amount spent.
a researcher is performing a two-way anova using two factors. the first factor has 5 levels and the second factor has 6
The median of 1.50 is a better measure of the center than the mean of 34.83 because of the outlier value of 414 seconds. What is the sample variance and standard deviation for these 30 numbers?
a survey found that womens heights are normally distributed with mean 63.5 in. and standard deviation of 2.5 in. a
Student A transfers to FSU and has a cholesterol reading of 199. What is the probability of observing a cholesterol reading of 199 or less?
Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.
martindate were tester which can compare two materials in sigle run, weights losses from seven runs. Examine these data by creating the 90% confidence interval for difference of means. Define your assumption.
Does the data prove a significant difference in mean GPAs? GPA1 GPA for Randomly Selected Students in Four Business Majors.
Regression line drawn as y c 1075x, when x was 2 and y was 239 given that y intercept was 11, calculate the residual.
question a study reported in the journal of the american medical association investigated the cardiac demands of heavy
Interpret the interaction graph in terms of what it shows about the three effects tested.
a researcher hypothesizes that people who listen to classical music have higher concentration skills than those in the
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