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The distribution of amount of money undergraduate students spends on books for a semester in slightly right skewed, with a mean of $400 and a standard deviation of $80.
If a student is selected at random, what is the probability that this student spends more than $425 on books?
Is there enough information given to be able to figure out the answer? The part where it mentions "right skewed" is messing me up as we didn't go over this situation in class
If the test contains 250 questions, what is the probability that Julie will score 75% or lower? (Use the normal approximation to the sampling distribution to solve this problem.)
The owner of a mail-order catalog would like to compare her sales with the geographic distribution of the population. According to the United States Bureau of the Census
If the population standard deviation is $7, and a random sample of 50 properties is chosen, what is the probability that the sample average will be below $35?
Assuming the population variances from both offices are equal, is there evidence of a difference in the mean waiting time between the two offices? Use α = 0.05
the assumptions of the production order quantity model are met in a situation where annual demand is 3650 units setup
Based on my calculations, what is the arrival and service rate for the express lane with 10 items or less? What is the arrival rate and service rate for the other customers with more than 10 items and what is the average arrival rate and service r..
consider the following simple model for daily changes in the price of a stock. suppose that on each day the price
What is the probability that the second one selected is defective given that the first one was defective? (c) What is the probability that both are defective?
for a poll 43 of 21944 people polled answered yes to the given question. given that 43 is the best estimate of the
Approval rating of 48% within a margin of error of 3%. Construct a confidence interval for the population proportion (p) of adults who approve of the candidate.
for each of the following parts indicate whether we would generally expect the performance of a flexible statistical
w. edwards deming in his red bead experiment had a box of 4000 beads of which 800 were red and 3200 were white.
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