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The proportion of smokers among college students is known to be about 18%. Twenty five students out of 100 from a nearby college were found to be smokers. Can you conclude that there is a higher proportion of smokers in this college compared to the entire college student community? Justify your answer by statistical reasoning.
a firm assumes that idle time of workers in construction projects is 72 minutes give or take 20 minutes. a random
What are the four possible relationships between religious and economic attitudes, according to Tawney.
Run the simulation model for Hammondsport Savings Bank's single ATM machine with the following assumptions: 1. Interarrival time between two customers is a uniform probability distribution
each student in a class of 80 rolls 8 dice in order to perform inference about the mean of all dice rolls which happens
The U.S. Postal Service reports 95% of first-class mail within the same city is delivered within 2 days of the time of mailing. Six letters are randomly sent to different locations. What is the probability that all six arrive within 2 days
What is the questionnaire score that separates customers who are considered risk averse from those who are not? Carry your intermediate computations.
Random Sample: Before you begin your analysis you are required to take a random sample of size 110 from the 170 cases in the file. Use the file Random_Sample_Generator-13-2.xls to do this.
How many of the 50 states are expected to incorrectly reject H0 for company A?
find the 50th percentile median the 25th percentile first quartile the 75th percentile third quartile and the 90th
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn counted 773 kernels and put them in a popperAfter popping, the unpopped kernels were counted
A survey of 30 adults found that the mean age of a person's primary vehicle is 5.6 years. Assuming the standard deviation of the populaiton is 0.8 year, find the 99% confidence interval estimate for the population mean.
Conventional wisdom suggests that women are more talkative than men. One study designed to examine this stereotype collected data on the speech
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