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There is a linear relationship between the duration x (in seconds) of an eruption of a geyser and the interval of time y (in minutes) until the next eruption. A least-squares regression line of data collected by a geologist is represented by, y-hat=41.9=0.18x, 100<x<300. What is the estimated increase in the interval of time until the next wruption that corresponds to an increase of 60 seconds in the duration?
The difference in mountain elevation of 26,200 feet and 1,100 feet below the surface of the ground. I am thinking +26,200 feet minus -1100 feet
What do the results suggest? How might you use this data from this sample size to develop a smoking cessation program at your workplace?
a) What is the purpose of sampling? b) What are some concerns and dangers of sampling?
The union for a particular industry has determined that the standard deviation of the daily wages of its workers is $20.. A random sample of 100 workers in this industry has a mean daily wage of $116.
Based on a sample of 49 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to ma ke various estimates. a) Compute the standard error of the sample mean. (Round your answer to 2 decimal places.)
The following table presents data on political party affiliation and class level for sample of students in certain university: If the student is selected at random from sample, determine the probability that student is Republican.
Sarah is a 60 year old Anglo female in reasonably good health. She wants to take out a $50,000 term life insurance policy until she is 65.
What is the probability that a particular driver has two speeding violations.
If the shop does not want to give more than 1% of its customers a free lube and oil change service, how long should the guarantee be?
A mean of 68 years and a standard deviation of 3.5 years. Find the age at which payments have ceased for approximately 86% of the plan participants.
Car A is known to have a maximum deceleration of 9.35 m/s2. How fast must car A have been going before its brakes were applied? Answer 97.5 km/h (27.1 m/s).
Does it appear that the treatment is effective? That is, is it very likely that we would observe only 6/200 contract hepatitis when 7% of the population is known to do so?
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