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Determine the probability that someone that traveled to Mexico has visited Canada too? Are travel to Canada and Mexico independent events? Explain.
An insurance salesperson is capable to sell policies to 15% of the people she contacts. Assume she contacts 120 people throughout a 2- week period. Determine the probability that she sells more tha
A consumer organization determines that over a 1-year period 20% of cars will need to be repaired once, 10% will need to be repaired twice, and 5% will require three or more repairs. Determine the p
The life span at birth of humans has mean of 88.71 years and standard deviation of 18.69 years. Compute the upper and lower bounds of an interval containing 95% of the sample mean life spans at birt
A drug made by pharmaceutical company comes in tablet form. Each tablet is branded as containing 105 mg of the specific active chemical. But, variation in manufacturing results in the actual amount
Seventy-four percent of light aircraft which disappear while in flight in certain country are subsequently discovered. Of the aircraft that are discovered, 69% have emergency locator, whereas 80% of
Determine the probabaility that Joan will not be able to bear a child? Determine the probability that none of the three women will be able to bear a child?
A basket haves three red, eight green, five blue, seven yellow, and four purple eggs. How many manners might the eggs be distributed to eight children, with no restriction on the number of eggs each
It is estimated that 20 percent of the patients at the large practice have reduced mobility. Twenty patients entering the practice are selected at random times. Determine the probability that less t
Suppose that the significance a level is a = 0.05. Employ the given information to find the P-value and the critical values. The test statistic of z=1.08 is obtained when testing the claim that p >
Every day, independently of previous days, the stock can quadrupal its value with probability 0.5 or lose value to be 1/4 of its value in the previous day with probability 0.5. How much is our 1 dol
One state lottery has 1000 prizes of $1, 140 prizes of $10, 20 prizes of $70, 5 prizes of $280, 2 prizes of $1300, and 1 prize of $2400. Assume that 32000 lottery tickets are issued and sold for $1
Can the variability for the same thing sometimes change across time, or with other circumstances? If so, can anyone share any examples of this?
The percent of women in the population of registered voters is 50%. A randomly chosen voter in the population is a women. Determine the conditional probability this individual will identify herself
Determine three conditions where the measured output of the process has a small variation and three conditions where the variation is larger
The Institute of Education Sciences determines the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential.
Compute the probability that 3 tagged fish are caught on the second day? Determine the expected number of tagged fish recaptured on the second day.
A box has 7 items, 4 good and 3 defective. 3 items are selected at random WITHOUT replacement. Let X be the number of good items. Find the probability mass function of X.
Assume there are two events, A and B. It is known that P(A and B) = 0. This means that A and B are definitely
From the given population, it is known that 58% are female, 35% are smokers, and 16% are females who smoke. Compute the probability that a randomly chosen person from this population will be female
A car rental has cars with the average of 9000 miles and standard deviation of 1200. If 25 cars are in the lot, compute the probability there average miles will be less than 9500 miles?
Assume a microchip manufacturer produces 1 defective chip for every 20 they build. They randomly choose 80 chips off the assembly line for quality control testing.
Suppose an unfair coin which comes up HEADS 2/3rds of time and TAILS 1/3rd of the time. Our experiment includes flipping this coin ten times and recording number of HEADS.