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The average annual return on a certain stock is 8.3%, and the variance of the returns on the stock is 2.3.
Another stock has an average return of 8.4% per year and a variance of 6.4. Which stock is riskier? Why?
Statistics and Probability, Statistics
You decide to research further this seemingly contradictory guidance, hypothesizing that the true population average core body temperature amidst higher ambient temperature and humidity levels while using an electric f ...
Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 5.
Hospital waiting room times are normally distributed with a mean of 38.12 minutes and a standard deviation of 8.63 minutes. What is the shortest wait time that would still be in the worst 20% of wait times?
The bold and italics portion is as far as I've gotten with the equation. Help me finish? And am I on the right track? A survey showed that 1200 of the 1600 adult respondents believe in global warming. (a) Construct a 95% ...
In a certain? state, pickup trucks account for 21?% of the? state's registered vehicles. If 100 registered vehicles are selected at? random, what is the expected number of pickup? trucks?
The mean time it takes a technician to resolve a software Issue is 18 minutes with a standard deviation or 4.2 minutes. This information was obtained from a random sample of 10 monitored calls. A sample of 15 monitor cal ...
A teacher started class one day by drawing the names of 10 students out of a hat and asked them to accomplish as much pushups as they could. The 10 randomly selected students averaged 15 pushups per person with a standar ...
The probability that a football game will go into overtime is 15%. What is the probability that exactly two of three football games will go to into? overtime? Round to the nearest thousandth.
Gala apples sampled at random from a specific orchard in New Zealand have a mean weight of μ= 147g with a variance of σ2= 841g^2, and the weights follow a normal distribution quite well. The grower wants to sell the appl ...
What is a financial and economic issue in the healthcare industry?
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