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Question: Suppose the time it takes a student to finish a quiz is uniformly distributed between six and 15 minutes, inclusive. Let X = the time, in minutes, it takes a student to finish a quiz. Then X ~ U (6, 15). Find the probability that a randomly selected student needs at least eight minutes to complete the quiz. Then find the probability that a different student needs at least eight minutes to finish the quiz given that she has already taken more than seven minutes.
In a random sample of 10 on-line statistics students, information was collected about their minutes studied and their chapter test scores. Is this relationship positive, negative or no relation?
question the u.s. government accountability office recently indicated the price of college textbooks has been rising
The number of degrees of freedom corresponding to between treatments is:
The cost of using the equipment is $250. The materials used in one shirt cost $10, and Gina can sell these for $15 each. How many shirts must Gina sell to break even?
When are differences (between one time period and another, between different production lines, etc.) between average or actual results important?
a polling company reported that 27 of 2286 surveyed adults said that they play football.a. what is the exact value that
the human relations director at dupont began a study of the overtime hours in the inspection department. a sample of 16
The heart rate in beats per minutes of 30 randomly selected students are given below: 78 64 69 75 80 63 70 72 72 68 77 71 74 84 70 62 67 71 69 58 74 70 80 80 63 88 60 68 69 70 71. Is it normal distribution or find the normal distribution.
The following information was obtained from two independent samples selected from two normally distributed populations with unknown but equal variances.
a researcher uses a hypothesis test to evaluate h0 micro 80. which combination of factors is most likely to result in
two perecent of calculators produced by texas intruments are defective. a batch of 300 calculators is tested to see if
That a sample of 40 females gives an average production which is more than that based on a sample of 36 males by more than 6 items, assuming sampling with replacement, and that, the sample size for the two sexes being the same, the average product..
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