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The director of admissions at a large university says that 15% of high school juniors to whom she sends university literature eventually apply for admission.
In a sample of 300 persons to whom materials were sent, 30 students applied for admission. In a two-tail test at the 0.05 level of significance, should we reject the director's claim?
a batch of 40 semiconductor chips is inspected by choosing a sample of 5 chips. assume 10 of the chips do not conform
The article indicated that 500 FBI agents were required to take a polygraph test. Consider the random variable x = number of the 500 tested who fail. If all 500 agents tested are trustworthy, what are the mean and standard deviation of x?
the us senate committee consists of 8 members. 5 members are democrates and 3 are republicans. a subcommittee of size 4
The manufacturer of a laser printer reports the mean number of pages a cartridge will print before it needs replacing is 12,325. The distribution of pages printed per cartridge closely follows the normal probability distribution and the standard d..
People arrive at a restaurant at a rate of five per minute and wait to receive their order for an average of 5 mins. Customers eat in with a probability of 0.5 and carry out with a probability of 0.5.
At the 0.01 level of significance, is there evidence to support the professor's claim?
The value of SS residual measures the average squared distance between the actual Y values and the Y values predicted by the regression equation.
a distribution center receives shipments of a product from three different factories in the quantities of 6040 and 20.
suppose you are an art dealer. you specialize in buying paintings by unknown painters at auctions and re-selling them
suppose that two evenly matched teams say team a and team b each with probability .5 of winning any given game make it
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
how is the denominator influenced by sample variability and given this why do we need a larger sample for between
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