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11) The time taken to assemble a car in a certain plant is a random variable having a normaldistribution of 20 hours and a standard deviation of 2 hours. What is the probability that a car canbe assembled at this plant in a period of time:a. less than 19.5 hours?b. between 20 and 22 hours?
airlines overbook tickets sales based on the assumption that a percnetage of passengers will not show on the day.
find the indicated probabilities using the geometric distribution or poisson distribution. then determine if the events
A company has developed the new battery, but the average lifetime is unknown. In order to estimate the average, a sample of 150 batteries is tested and an average lifetime of this sample is found to be 250 hours.
a doctor who wants to estimate the hdl cholesterol of all 20-29 year old females. how many subjects are needed to
the genes for eye color in a certain male fruit y are r w. the genes for eye color in the mating female fruit y are r
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship.
Basic Statistics problem
Evidence that average family income in a community
A researcher hypothesizes that parents with school-aged children are more probable to vote in favour of a referendum increasing public school spending than adults without school-aged children, but wonders of this relationship holds for both Democr..
Create one table that calculates summary measures of the change in test scores and income variables across all 80 schools.
The probability distribution for the possible results of an experiment is given, Determine the mean of the distribution.
Describe whether the data appear to be approximately normally distrusted by .. a. Comparing data characteristics to theoretical properties.
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