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Jane has two tennis serves, a hard serve and a soft serve. Her hard serve is in (a good serve) 50% of the time and her soft serve is in (good) 75% of the time. If her hard serve is in, she wins 75% of her points. If her soft serve is in she wins 50% of her points. Since she is allowed to reserve one time if her first serve is out what should her serving strategy be? That is should she serve hard followed by soft; both hard; soft followed by hard; or both soft.
The accompanying two histograms represent the distribution of acceptance rates (percent accepted) among 25 business schools in 1995. The histograms use different class intervals, but are based on the same data. In each class interval, the left endpoi..
A survey of college students collected information on several variables: Distance from Home, Age, Major, Gender, and Class. The variable Major is
Use a scatter plot to determine the relationship between the x values and the y values.
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
You have two unbiased estimates, e 1 and e 2 , of a quantity with variances V 1 and V 2 respectively, and covariance Cov {e1,e 2 } = C. Form a new unbiased estimate:
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H 0 = 1/2.
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
Determine the probability of exactly one success given Poisson distribution with mean of 2.0.
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