At a local university, you poll a group of 115 students and find that 37 of them are right handed. Is this subjective, empirical, or classical proababilty and why?
Classical probability : It is defined as to find the probability that happening in n number of events
Subjective probability : It is defined as to find the probability that depends up on luck or belief
Empirical probability : It is defined as to find the probability that depends on experiments
At a local university, you poll a group of 115 students and find that 37 of them are right handed
Classical probability
37/115 = 0.3217
At a local university, you poll a group of 115 students and find that 37 of...
Suppose that a poll taken among 100 students at a university turns out that 57 of them favor a diet containing meats, while 39 of them favor a vegetarian diet and 4 of them did not answer the poll with either of the two options (meat or vegetarian). (i) Compute the probability that the observed sample average differs from the true proportion of students at the university that favor a meat diet in less than 3%. (ii) Based on this...
Suppose that 10% of students are left-handed. a) In a study group of 6 students, find the exact probability that at most 1 of them is left-handed. b) In a classroom of 60 students, find an approximate probability that at most 10 of them are left-handed.
a group of statistics students decided to conduct a survey at their university to find the average amount of time students spend studying per week. assuming a standard deviation of 5 hours, what is the required sample size if the error is to be less than 1/2 hour with 92% level of confidence?
you extract a sample of 115 students from this university. The sample proportion is the proportion of students in this sample who live on campus. The standard deviation of the sampling distribution of this sample proportion, rounded to four decimal places, is: 5. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation ofexpenditures at this store is σ. $19. The 98% confidence interval for the population...
9. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a population standard deviation of three hours, what is the required sample size if the error should be less than a half hour with a 99% level of confidence? 10.University officials say that at least 70% of the voting student population supports a fee increase. If the 95% confidence interval estimating the...
In a local university, 66% of the students live in the dormitories. A random sample of 70 students is selected for a particular study. We know that the standard error of the proportion is 0.0566. Find the probability that the sample proportion (the proportion living in the dormitories) is between 0.64 and 0.67.
In a local university, 66% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. We know that the standard error of the proportion is 0.0530. Find the probability that the sample proportion (the proportion living in the dormitories) is between 0.65 and 0.68.
at a local university 54.3% of incoming freshman at computers. Three students are selected at random, find the following probability: none have computers
Suppose we take a poll (random sample) of 3795 students classified as Juniors and find that 3207 of them believe that they will find a job immediately after graduation . What is the 99% confidence interval for the proportion of GSU Juniors who believe that they will, immediately , be employed after graduation .
Suppose we take a poll (random sample) of 3556 students classified as Juniors and find that 3051 of them believe that they will find a job immediately after graduation. What is the 99% confidence interval for the proportion of GSU Juniors who believe that they will, immediately, be employed after graduation.