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In a Gallup poll of 1,038 adults, 540 said that second-hand smoke is very harmful. What is the percentage of adults who said second-hand smoke is very harmful.
Which probability distribution is suitable when sampling without replacement?
0.8 of all college students like the idea of a new curriculum. If we select 87 students (ASSUME INDEPENDENCE), what is the Standard Deviation of the Probability Distribution that would list the number of students.
An order for 5 pizzas has just been place. What is the minimum number of pizzas that must be made in order to be at least 99% sure that there will be 5 that are edible?
The lower limit for a 95% confidence interval for the population proportion if a sample of size 200 had a 40 success is.
The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes.
Cheating Gas Pumps When testing gas pumps in Michigan for accuracy, fuel-quality enforcement specialists tested pumps and found that 1299 were not accurate (within 3.3 oz when 5 gal is pumped), and 5686 were accurate.
SAT Scores and the Central Limit Theorem. Assume that SAT scores are normally distributed with a mean of 500 and a standard deviation of 100.
What is the probability that the mean completion time is between 1 and 2 hours, i.e.., 60 and 120 minutes?
A random sample of 1001 University of California faculty members taken in December 1995 was asked, "Do you favor or oppose using race, religion, sex, color, ethnicity or national origin as a criterion for admission to the University of California?
Is there evidence of a difference in the variability of the waiting time between the two branches? (Use 5% level of significance). Find the p-value in (a) and interpret its meaning.
Market researchers use it by correlating product attribute ratings with a dependent measure such as overall satisfaction. They then rank the product attributes to determine which attributes are the most important. They call this Key Driver Analysi..
Construct a 90% prediction interval for sales when the total sq footage is 4.2 billion. The equation of the regression line is yhat=499.967x - 1595.147.
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