Probability of completing the exam

Assignment Help Basic Statistics

Reference no: EM1388907

The time required to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions.

a) What is the probability of completing the exam in an hour or less?

b) What is the probability that a student will complete in more than 60 minutes but less than 75 minutes?

c) Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time?

Reference no: EM1388907

Questions Cloud

Probability that a randomly selected person sleeps more : According to the Sleep Foundation, the average night's sleep is 6.8 hours. Assume the standard deviation is 0.6 hours and the probability distribution is normal. a. What is the probability that a randomly selected person sleeps more than 8 hours?

Find frequency of the q allele after selection : Assume if you have a population, with a frequency of the p allele (A)equal to 0.25, and you apply the selection outlined below, what will be the frequency of the q allele after selection?

What average total force acted on the car : A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) what average total force acted on the car all through that time? (b) How far did the car travel all through that time.

Illustrate the characteristic of the car rental in industry : Illustrate what are the characteristic of the car rental industry? Explain how do these characteristic influence the design of service delivery processes in this industry in general?

Probability of completing the exam : The time required to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. a) What is the probability of completing the..

Create simulation by java language for single-server queue : Suppose that customer inter-arrival times are exponentially distributed and service times are normally distributed. Create simulation by java language for this problem and view all parametre?

State the amplitude of the electric field vector : State the amplitude of the electric field vector in micro volts per meter to three significant figures.

Illustrate inflation expectations in korea compared : If the forward rate is an accurate predictor of exchange rates, in this case will the won get stronger or weaker against the dollar? Illustrate what does this indicate about inflation expectations in Korea compared to the US?"

Iq scores and normal distribution : A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a ..

User Account

All Pages