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In 2005, the distribution of the score in the math portion of the SAT test was approximately normal with a mean µ520 and a standard deviation σ = 115. (a) What percentage of students scored more than 720 in the math portion of the SAT test in 2005? (b) Suppose that sample of 64 students that took the SAT in 2005 is randomly selected. What is the probability that the average score ¯ x in the math portion of the SAT for these 64 students is between 491 and 549?
Most of the time managers will have initial (or prior) knowledge of the probabilities that an event or outcome will result. When new information is obtained, initial probability projections can be revised and improved. What statistical techniques ..
Can you please help me with binomial distribution? More specifically, how to find the mean and standard deviation?
What is the slope? What is the Y-intercept? Interpret the slopes and their meaning.
the total claim amount for a health insurance policy follows a distribution with density function fx 11000e-x1000 for
Consider flipping two independent fair coins. Let X be the number of heads that appear. Compute P(X=x) for all real numbers x.
The equation of the regression is Y = a +bX. Match the following symbols to the description to the right.
Suppose that the monthly bills of a population of households are normally distributed with a mean of $90 and standard deviation of $20. sample of 25 households
What source of variation is found in an ANOVA summary table for a with in subjects design that is not in in an ANOVA summary table for a between subjects design. What happens to this source of variation in a between-subjects design?
Find the probability that it would perform as well or better again.
What is the probability that ONE car chosen at random will have -less than 35.5 tons of coal - what is the probability that 20 cars chosen at random will have a mean load weight x¯ less than 35.5 tons of coal?
The speed of cars passing through a checkpoint follows a normal distribution with μ = 62.6 miles per hour and σ = 3.7 miles per hour. What is the probability that the next car passing will ...
During normal business hours on the east coast, calls to the toll-free reservation number of the Nite Time Inn that the numb roy calls per minute can be described by the Poisson distribution.
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