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Question: Gina took the SAT in 1994 and scored 500. Her cousin Colleen took the SAT in 2013 and scored 530. Who did better on the exam, and how can you tell?
(a) Colleen-she scored 30 points higher than Gina.
(b) Colleen-her standardized score is higher than Gina's.
(c) Gina-her standardized score is higher than Colleen's.
(d) Gina-the standard deviation was bigger in 2013.
(e) The two cousins did equally well-their z-scores are the same.
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.
Provide one example in the accounting department that you can apply a contingency table to. Briefly explain how a contingency table can be useful.
what percentile is associated with a t score of 39? how do you work it
Write a 500-word response to the following question: How effective was Thomas Jefferson as president in regards to both foreign and domestic policy? Look at his presidency and analyze what he did while in office.
the days to maturity for a sample of five money market funds are shown here. the dollar amounts invested in the funds
Suppose that the two components are placed in series and that as soon as a component fails, it is replaced by a new one. Let N(t) be the number of replacements in the interval (0,t]. We can show that the stochastic process
GENDER GAP A study of the faculty at U.S. medical schools in 2006 revealed that 32% of the faculty were women and 68% were men.
Assuming the standard deviation stays the same, how much do you have to reduce your average production time so that 95% of the time you can deliver the product in under 75 hours?
Find the cumulative distribution function.- Find the probability that at most four additional hours are slept.- Find the probability that at least two additional hours are slept per night.
A random sample of patients who received a hip transplant operation at Stanford University Hospital during 2000 to 2010 will be followed for 10 years.
the lifetimes of brakes manufactured by company a are random with density function gxbegincases frac18e-x8 amp xgt0 0
For the last problem, what is the minimum number of observations that must be altered so that the trimmed mean is greater than 1,000?
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