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The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. x 4 5 6 8 10 P(x) 0.3 0.15 0.35 0.15 0.05 a) Find the mean, variance, and standard deviation for this probability distribution. b) Suppose the kiosk salesperson makes $80/day (8 hours at $10/hour), plus a $25 bonus for each new phone contract sold. What is the mean and variance of the salesperson's daily salary?
question a political party suspects there are differences in presidential candidate preferences based on age. a
a friend of mine is giving a dinner party. his current wine supply includes 8 bottles of zinfandel 12 of merlot and 11
An election poll reported that a candidate had an approval rating of 48% with a margin of error E of 3%. Construct a confidence interval for the proportion of adults who approve of the candidate.
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled "3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
the quantity of milk in a bottle is normally distributed with mean 1000ml. find the standard deviation given that the
State the appropriate null hypothesis H0 and alternative hypothesis Hain each of the following cases. (a) A 2002 study reported that 70% of students owned a cell phone. You plan to take an SRS of students to see if the percent has increased.
The following data shows the service ratings for eight ramdomly selected small ships, eight randomly selected large ships. All ships are rated on a 100-point scale, with higher valuse indicated better service (traveler Feb 2003)
on tuesday april 15th 2014 gallup reported that 43 of americans approve of the job barack obama is doing as president.
control chart for x bar is maintained on a quality characteristic which is normally distributed.the sample size is n4.
the number of traffic accidents on successive days are independent poisson random variable with mean 2.a find the
A bag contains 8 red marbles, 2 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue?
a) Summarize the above information in a table b) Assuming that the factory can sell all the printers and scanners that it assembles, formulate the above information into a Linear Programming problem.
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