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The standard deviation of a set of scores is 20. What will the standard deviation become if
(a) 15 points are added to each score?
(b) Each score is divided by 5?
(c) 10 points are subtracted from each score and the resulting values are divided by 2?
(d) Each score is multiplied by 5,and 20 is then added to each resulting value?
Determine the probability that no more than 10 firms are perfectly competitive?
The time of service of a certain desgin of hydraulic system equipment ranges between 100,000 and 350,000 hours, with each service life having a uniform probability of occurring. What is the probability density function?
suppose 60 people in stat 322 class each generate a random number independently resulting in 60 random numbers.let x
The confidence interval for proportion of adults who approve of the candidate is ____
What is the difference between probability sampling and simple random sampling? Simple random sampling is a type of probability sampling.
Sstandart deviation of 40 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 368 seconds.
a shipment of 30 tires arrived at a tire shop this past weekend and unknown to the manager eight of the tires are
Suppose you have $100,000 to invest in stocks. If you invest $1000 in any particular stock your profit will be $200, $100, $0 or -$100 (a loss).
High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter.
Use the Kolmogorov-Smirnov test to discover whether the distribution of location of accidents is uniformly distributed for the month of September
The following data represent the performance of a constant-proportion debt obligation (CPDO), executed on October 10, 2006, from that day until March 10, 2007.
Suppose that at $45, you were the highest bidder for the certificate auctioned off during the chapter demonstration.
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