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If two randoom samples of sizes n1 = 30 and n2 = 36 are selected independently from two populations with mean 78 and 85, and with standard deviations 12 and 15, respectively, then the standard error of the difference between Xbar1 and Xbar2 are equal to??
Normalized matrix for one decision criterion at Firm T is given below.
Sales manager wishes to award sales representatives who earn the largest commissions a bonus of= $1,000 .He can award bonus to 20% of representatives. Determine cutoff point between those who earn bonus and those who don't?
How many units of capacity should be built to minimize the total cost of providing capacity plus lost sales?
Find out the operating characteristics for this system.
If the probability that it will rain tomorrow is 0.33, then what is the probability that it will not rain tomorrow?
Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
Determine the lowest weight a student can have and still be qualified to enter the school.
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
Develop a 90 percent confidence interval for the proportion of applicants that fail the test. (Round your answers to 2 decimal places.)
The scores of college-bound senior men on the math part of the SAT followed a normal distribution with mean 527 and standard deviation 116.
At.05 level of significance, is there evidence to propose that mean life length of the batteries manufactured by this manufacturer is more than 400 hours?
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