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A music shop is promoting a sale in which the purchaser of a compact disk can roll a die, then deduct a dollar from the retail price for each dot that shows on the rolled die. It is equally likely that the die will come up any integer from 1 through 6.
The owner of the music shop pays $5.00 for each compact disk, then prices them at $9.00. During this special promotion, what will be the shop's average profit per compact disk sold?
Plot the sales data as a time series and do you think this series is stationary or nonstationary
A random sample of 7 students selected from a large class revealed the following scores: midterm 70, 62, 57, 68, 89, 63, 82 and on the final 80, 79, 87, 88, 85, 79, 91. Is there evidence of an improvement on the final?
the weight of an organ in adult males has a bell-shaped distribution with a mean of 330grams and a standard deviation
Any value which is based on having measured a sample is called:
Calculate the mean difference for the following data. The scores are the number of pictures the participants remembered correctly out of 20.
waiters at finegolds restaurant and lounge earn most of their income from tips. each waiter is required to tip-out a
Calculate the standard deviation of the sample mean for samples of size 1, 4, 25, 100, 250, 500, 1000, and 5000. Graph your results with the sample size on the x axis and the standard deviation on the y axis.
When is an ANOVA test used? What does it determine? When is a Chi-Squared used? What does it determine? When is MANOVA used? What does it determine? What is a category scheme in qualitative data?
Calculation of Mallows Cp and Mallows Cpk
A company that relies on internet-based advertising linked to key search terms wants to understand the relationship between the amount it spends on this advertising and revenue (in $).
given a uniform distribution for a random variable x on the interval 1 to 11. what is the probability for x being
to find the sample size needed for a hypothesis test if ho mu10 ha mult10 sigma is unknown alpha 0.01 beta 0.05 and e
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