On a college entrance exam, each question has five possible answers. If you make a random guess on the 20th question, what is the probability that you are incorrect? I think that P(correct)=1/5...
On a college entrance exam, each question has five possible answers. If you make a random guess on the 20th question, what is the probability that you are incorrect? I think that P(correct)=1/5...
A doctor has five doses of flu protection vaccine left. he has six women and eight men who want the medication. if the names of five of these people are selected at random determine the probability...
A study about the students graduating within 4 years of their entrance to the universities indicated that 62% of the students do not graduate within 4 years. Suppose a random sample of 500 students...
the answer should be rounded
A study about the students graduating within 4 years of their entrance to the universities indicated that 62% of the students do not graduate within 4 years. Suppose a random sample of 500 students...
4 fair coins are simultaneously flipped and 1 fair 4-sided die (with numbers 1-4 on the faces) is tossed. What is the probability that the number of heads is equal to the number that comes up on the...
The sum is greater than 8 and divisible by 6
A coin is flipped 40 times, it lands on heads 16 times. How many heads would you predict for 200 flips?
Find Pr[{O1}]
According to a newly published report approximately 43% of adults say filing their tax paperwork is worse than a trip to the dentist.If a random sample of 200 is chosen, the probability that at least...
4 fair coins are simultaneously flipped and 1 fair 4-sided die (with numbers 1-4 on the faces) is tossed. What is the probability that the number of heads is equal to the number that comes up on the...
Historically, a production line produces 6% defective items. The production supervisor takes a sample of 100 items frequently and if he finds 8 or more defective products, he stops the line to make...
Antonella has 5 different T-shirts that she can hand out to 3 different people. If each person gets only 1 T-shirt, how many different combinations of T-shirts are possible?
Such that the z score lies to left of the mean and the area between it and the mean is 0.2704
What is the probability that your estimate, ??¯, will be within $200 range of the actual mean income of Arizonans i.e. P(27000-200≤ ??¯≤ 27000 + 200) = P(26800 ≤ ??¯≤ 27200)?
The proportion of people who are going to vote for party i is represented by ρi. Suppose that there are two political parties namely A and B. ρa and ρb are uniformly distributed. Also assume that...
According to a newly published report approximately 43% of adults say filing their tax paperwork is worse than a trip to the dentist. If a random sample of 200 is chosen, the probability that at least...
The average life of a battery used in newly designed electric cars is 150 hours with a standard deviation of 20hours. Suppose these values are true for all batteries of this type so that these values...
Based on a report, 55% of the voters believe that the nation's current economic problems are the result of recession that started during the Bush administration. A new Rasmussen Reports national telephone...
A local car dealership has the following cars on its lot: 22 Honda SUVs, 47Honda sedans, 15 Ford SUVs, and 36 Ford sedans. You win a raffle that lets you drive away one of these vehicles for free...