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Determine the probability a non-morning student does not live on campus?
Failures of O-rings on space shuttle were fairly rare, but chould be disastrous, events. If we were testing O-rings, suppose that the probability of a failure of any one O-ring is 0.01. Let X be the
A retail company should select a few employees to send to the national retail conference. Of the 774 employees at this company, 498 are male.
A soda-filling machine is intended to dispense 12 ounces of product per can. The actual machine performance has mean value of 12.4 ounces with standard deviation of 0.2 ounces. Based on this informa
According to the eMarketer, adults in the United States average 82 minutes per day on mobile devices in 2012. Assume that minutes per day on mobile devices follow the normal distribution and has a s
Sickle-cell anemia is hereditary medical condition affecting red blood cells which is thought to protect against malaria, a debilitating parasitic infection of the liver and blood.
In semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is classified as pass or fail. Assume the probability that a wafer passes the test is 0.8 and that wafers are i
For the following set of scores, compute standard scores 18, 19,15 ,20 ,25, 31, 17,35, 27,22 ,34, 29,40, 33, 21?
A magnetic disk drive manufacturer produces precision bearings with the diameter which follows normal distribution having mean value of 0.2508 inches and standard deviation of 0.0008 inches.
If "correlation does not imply causation," what does it imply? Are there ever any circumstances when a correlation can be interpreted as evidence for a causal connection between two variables? If ye
A safety device and its independet back up each have 3% failure rate. What is the chance they both will fail?
A study of US clinical population found that 23.4% are diagnosed with a mental disorder, 12.2% are diagnosed with an alcohol-related disorder, and 5% are diagnosed with both disorders.
The probability of getting a certain disease is 0.2. A certain test is available which returns positive result 90% of the time for those with the disease,
In certain country, 8% of population have a certain disease. A diagnostic blood test has been developed for the disease. If a person has the disease, the result is positive 91% of the time while if
Two player play game with two nonstandard dice A and B. A has 4 sides which show 5 and rest show 2 while B has 3 sides which show 7 and the rest show 0. When rolled, each face is equally likely to s
An urn haves 3 red and 5 blue balls. Assume that 5 balls are chosen at random and with replacement. Determine the probability that the first 2 are red and the rest are blue?
Compute the following for population of five cases: 50, 54, 55, 62, 67. Please show your work.
For the t distribution with 48 degrees of freedom:
Canada's national healthcare. The ministry of Health in Canadian province of Ontario desires to know whether the national health care system is achieving its goal in the province. Much information r
In survey of undergraduate library usage, it was found that 88% of seniors, 62% of juniors, 48% of sophomores, and 40% of freshmen use the library frequently.
Of patients going to primary care physician's (PCP's) office, 30% are referred to the specialist, 40% need lab work, and 35% require neither lab work nor a referral to a specialist.
A large company desires to determine the average amount of money that is owed to it by delinquent customers, µ. The company takes a random sample of n=100 of its delinquent accounts. The mean
CBU planner is interested in determining the percentage of spring semester students will attend summer school. She takes a pilot sample of 160 spring semester students discovering that 56 will retur
Suppose that the height of humans is normally distributed parameter. If 80% of all people are taller than 165 cm, and 98% of all people are shorter than 193 cm, determine the mean and standard devia
A valve can be employed at four temperature levels. If the valve is employed at the cold temperature, then there is probability of 0.003 that it will leak.