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A study conducted at a certain college shows that 55% of the school's graduates find a job in their chosen field within a year after graduation.
Find the probability that among 8 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
Consider following data on exam scores of 10 randomly selected students: Compute 3rd quartile of the exam scores.
Conduct the following test using 95% level of confidence.
A laboratory scale is known to have a standard deviation of = 0.001 gram in repeated weighings. Scale readings in repeated weighings are normally distributed, with mean equal to the true weight of the specimen.
Construct a 95% confidence interval for the proportion and calculate the P value for the given test.
Assume R is commutative ring. Prove that the following are equivalent: Here N(R) denotes the nilradical of R. The set of nilpotent elements form an ideal called the nilradical of R
Twenty air samples were obtained and the carbon monoxide concentrations were recorded. the results in ppm (parts per million) were:
A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds. What is the probability that exactly 20 germinate?
The Federal Government of Australia uses the cash rate to control the inflation rate in Australia. Is there statistical evidence to support such a policy?
Find the proportion of employees who are managers and have MBA degrees.
Never forget that even small effects can be statistically significant if the samples are large. Of 148 small businesses, 106 were headed by men and 42 were headed by women.
Jolly Blue Giant Health Insurance is concerned about rising lab test costs and would like to know. Determine the essential sample size?
The Director of Emergency Medicine at Big Mountain Medical Services is studying patient waiting time. Waiting time is defined as the time from when a patient enters the facility until seen by a physician.
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