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In a random sample of 300 persons eating lunch at a department store cafeteria, only 102 had dessert. If we use 102/300 = 0.34 as an estimate of the corresponding true proportion, with what confidence can we assert that our error is less than 0.05?
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean?
A coin is tossed 3 times. Discrete random variable X is equal to the number of times Heads comes up. Discrete random variable Y has the value 1 if the first toss comes up heads and 0 otherwise.
What is the break-even cost? What is the profit for 75 units of feed sold? How many units must be sold to produce a profit of $1020?
the probability that a person will have 01or 2 flat tires a year is 0.73 0.19 and 0.0o respectively. if ten people are
Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
Find the equation of the regression line. What is the predicted value when x = 4? Is the correlation significant at 5% significance level (95% confidence level)? Why or why not?
the t statistic indicates theselect onea. number of standard deviations a sample is from the population mean.b. number
Consider an edge-emitting laser with identical facets. Find the mirror loss and threshold gain if nactive =3.2, a,=5 cm·1 and L=l mm. Now consider that one of the facets is coated with a dielectric/metal layer such that th..
let x be a poisson random variable with mean 20.a use the markov inequality to obtain an upper bound on p p x gt 26b
In general, determine the standard score a measure of?
question we are interested in the proportion of uoi students who smoke. a random sample of n 400 uoi students is
a. How many factors are involved? How many levels are there for each factor? How many trials will be required for a single replicate of the experiment? Can a test for lack of fit be obtained?
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