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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?
Use Chebyshev's theorem to find what percent of the values will fall between 162 and 292 for a data set with a mean of 227 and standard deviation of 13.
A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be
75 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly
Find out a linear equation in the form P = mt + b (y = mx + b) that gives the population, P, t years from 2010.
What does the * represent in a boxplot? How many * are there for the variable Book Cost? What are the outlier values? What is the 5-number summary for Book Cost?
question a researcher is interested in comparing the christian maturity level of students who volunteer for community
data from previous years reveal that the distribution of the final exam scores in an introductory stats class is
a production process requires a fixed cost of 50000. the variable cost per unit is 25 and the revenue per unit is
enzyme immunoassay tests are used to screen blood specimens for the presence of antibodies to hiv the virus that causes
a professor has found that the grades on the statistics final are normally distributed with a mean of 68 and a standard
Compute the pdf of continuous random variable Z where Z = X + Y and X is a continuous random variable uniformly distributed on [0, 2] and Y is a continuous random variable uniformly distributed on [0, 4]. Assume that X and Y are independent.
1. you are tracking correlation of two funds fund a and fund b. examining current quarter data to date the probability
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