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Suppose a baseball player had 211 hits in a season. In the given probability distribution, the randon variable X represents the number of hits the player obtained in a game.
x,P(x)0,0.15531,0.48432,0.23493,0.08214,0.01245,0.0310
compute and interpret the mean of the random variable x.Mx=Which of the following interpretations of the mean is correct?A. the observed value of the random variable will almost always be equal to the mean of the random variable.B. the observed value of the random variable will almost always be less than the mean of the random variable.C. As the number of trials n increases, the mean of the observations will approach the mean of the random variable.D. As the number of trials n decreases, the mean of the observations will approach the mean of the random variable.
At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that:
A random-effects ANOVA refers to the analysis where the levels included in the study represent a random sample of all levels that exist.
Machine X test unit cost $3000 with beta=3 and theta=500, Machine Y test unit cost $2000 with beta=3 and theta=400. If the machines oil fixtures has life of 20 hrs, which machine goes to market first?
In what areas of your business is it important to draw inference? Describe a time when drawing an inference may have hurt your business.
Excess postexercise oxygen consumption (EPOC) describes the energy expended during the body's recovery period immediately following aerobic exercise.
Mean of 3 goals per game. Find the probability that each of four randomly selected state college hockey games resulted in 6 goals being scored.
The Gallup organization conducted a telephone survey with a random selected national sample of 1005 adults, 18 years and older. The survey asked the respondents, "How would you describe your own physical health at this time? "Response categories w..
Last school year, student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classificati..
From a previous study, the standard deviation of the ages is known to be 3 years.
The data show that 48 of the doctors picked brand x. If these data were evaluated using a chi-square test for goodness of fit, what is the expected frequency for brand x?
Participants is approximately a normal distribution with a mean of 68 years and a standard deviation for 3.5 years. What proportion of the plan recipents die before they reach the standard retirement age of 65.
A sample of 30 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.8 with a standard deviation of 3.
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