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At a certain gas stations, 50% of the customers use regular unleaded gas (A1), 30% use extra unleaded gas (A2), and 20% use premium unleaded gas (A3) of the customers using regular gas only, 30% fill their tanks (event B). of those customers using extra gas, 60% fill their tanks, whereas of those using premium, 50% fill their tanks. a. What is the probability that the next customer will request extra unleaded gas and fill the tank (A union B)?
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
Given the EOQ, what is the average inventory? What is the annual inventory holding cost and in minimizing cost, how many orders would be made each year? What would be the annual ordering cost
Find the probability that the first marble drawn was blue given that the second marble drawn was red and what is the range space RY of this new random variable Y and give the probability distribution of Y in tabular form
Find the critical value z that corresponds to the given confidence level of 90%.
Automobile manufacturers are interested in the difference in reaction times for drivers reacting to traditional incadescent lights and to LED lights.
If a null hypothesis is rejected at a significance level of .01, it will ______ be rejected at a significance level of .05
A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.
Prepare tables of descriptive statistics (mean, median, Quartiles, IQR, and Standard Deviation) by firm for net profit margin (PROFITS). Discuss.
What is sampling error? Could value of sampling error be zero? If it were zero, what would this mean?
How large a sample would be necessary to estimate the population proportion with a margin of error of 0.05 at 95% confidence?
Explain the concepts involved in hypothesis testing, including what hypothesis testing is, and an explanation of the four types of scales used to measure data.
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