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A random variable X has this probability distribution: x 0 1 2 3 4 5p (x) 0.1 0.3 0.4 0.1 ? 0.05 a. Find p (4). b. Find μ and σ. c. Calculate the interval μ ± 2σ. What is the probability that X will fall into this interval? d. If you were to select a very large number of values of X from the population, wouldmost fall into the interval μ ± 2σ? Explain
alumni donations are an important source of revenue for colleges and universities. if administrators could determine
Children per family for certain community from census data. Recognize random variable of interest, find out whether is a discrete or continuos, and write its possible values.
one-way analysis of variance anova test.the following is a partial anova table.sourcesum of squaresdfmean
The length of time sixth graders watch television each day is normally distributed with a mean = 118.3 minutes and standard deviation = 43.1 minutes. Use this information to answer the following:
One purpose of displaying data graphically
Write the stems again, and rearrange the leaves in increasing order out from each stem. We are interested in the distribution of the data? What would be appropriate to display this?
Nick Jagr, company president, has negotiated most of the issues to sell Blasters through automotive aftermarket retailers in those countries. You have been brought onboard to handle the transportation issues related to the company's initial effort..
About 5.5 percentage points in either direction from what would have been obtained by seeking out all Ohio State University female students." Do your results agree with this statement?
According to the regression line, how long does a typical dive to a depth of 200 meters last? The dives varied from 40 meters to 300 meters in depth. Plot the regression line from D=40 to D=300.
it is estimated that 25 of the athletes competing in a large tournament are users of an illegal drug to enhance
It is known that 60% of all students at a large university are female. A random sample of 8 students is selected. Calculate the probability that among the students in the sample 4.1 at least 7 are female 4.2 at most 1 is female.
assume that bobs golf scores g approximately follow a normal distribution with a mean of 77and standard deviation of
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