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A study found that for 60% of the couples who have been married 10 years or less, both spouses work. A sample of 30 couples who have been married 10 years or less are selected from marital records available at a local courthouse. We are interested in the number of couples in this sample in which both spouses work. What is the probability that this number is:
(a) 20 or more?(b) 25 or more?(c) 10 or fewer?
(Use the normal approximation.)
For a sample with n=36, the mean duration of a geyser is 3.55 minutes and the standard deviation is 0.63 mintues. Using chebychev's theory, determine at how many of the eruptions lasted between 2.29 and 4.81 mintues.
consider the following probability distributiondemand 0 1 2 3 4probability .15 .30 .25 .15 .15partition
Describe expected value (EV) of an investment if there is a 20% chance of realizing a return of $20,000 or a 55% chance of realizing a return of $25,000, or there could be a loss of $15,000?
Prepare a bank reconciliation using Bobby Barnacles' Restaurant Supply Inc's information for August 31.
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
If you were to roll a single die 10 times, the result of each roll would be __________. A) Mutually exclusive of the other nine rolls B) Proportional to the other nine rolls C) Dependent upon the other nine rolls D) Independent of the other nine roll..
If profit earned in the manufacture and sale of X units of a product is P dollars where: P = 10X - 0.001X2
resistors produced by a certain firm are marketed as 10-ohm resistors. however the actual resistances of the resistors
a bridge hand consisting of 13 cards is selected at random from an ordinary deck of cards. let h d c and s be the
Normal distribution with mean 32.6 ounces and standard deviation 0.4 ounce. If two packages are randomly selected, what is the probability that the average weight is less than 32 ounces?
Construct a 98% confidence interval for the average life expectancy of countries around the world. The data appear to be normally distributed.
if component lifetime is exponentially distributed with parameter lambda obtain an expression for the proportion of
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