Question

The delivery times for a courier company are uniformly distributed between 2 day and 4 days....

The delivery times for a courier company are uniformly distributed between 2 day and 4 days. What is the probability that a package will be delivered between 2.5 days and 3 days?  

Select one:

a. 1.0

b. 0.25

c. 0.75

d. 0.33

e. 0.5

Homework Answers

Answer #1

B is correct.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Express Courier Service has found that the delivery time for packages is normally distributed, with mean...
Express Courier Service has found that the delivery time for packages is normally distributed, with mean 14 hours and standard deviation 3 hours. (a) For a package selected at random, what is the probability that it will be delivered in 18 hours or less? (Round your answer to four decimal places.) (b) What should be the guaranteed delivery time on all packages in order to be 95% sure that the package will be delivered before this time? (Hint: Note that...
A courier company recorded delivery times (in minutes) to deliver parcels to their clients. The sample...
A courier company recorded delivery times (in minutes) to deliver parcels to their clients. The sample data is summarized in the cumulative frequency distribution below: Delivery time (minutes Cumulative frequency ≤ 10 10 ≤ 20 35 ≤ 30 58 ≤ 40 77 ≤ 50 89 ≤ 60 100 If the first class in the frequency distribution is 1 – 10, calculate the following: a) The mean delivery time of parcels to clients by this courier company. [5] b) The standard...
Fed-Ex claims that the variance of their 2-day package delivery is less than 0.75 days. A...
Fed-Ex claims that the variance of their 2-day package delivery is less than 0.75 days. A simple random sample of 24 deliveries showed a sample variance s2 = 0.81 days. (a) Test the Fed-Ex claim at 95% confidence level. (b) Construct a 95% Interval Estimate for population variance for the 2-day delivery times.
Suppose pizza delivery times are a normally distributed random variable with an expected value of 20...
Suppose pizza delivery times are a normally distributed random variable with an expected value of 20 minutes and a standard deviation of 4 minutes. a) What is the probability a delivery will take between 15 and 25 minutes? b) If the pizza doesn’t arrive in 30 minutes, it is free. What is the probability the pizza will be free? c) Find the shortest range of times that includes 40% of all delivery times. d) In a particular month 1,000 pizzas...
The US postal service claims that delivery time for a package originating in California will take...
The US postal service claims that delivery time for a package originating in California will take an average of 4 days to be delivered to New York City. The postal service also claims that the distribution is normally distributed with a standard deviation of 2 days. If a package is chosen at random, what is the probability that it will take 5 or more days to get to NY? 95% of the packages are delivered before how many days? What...
Suppose that the weight of an newborn fawn is Uniformly distributed between 2.5 and 4 kg....
Suppose that the weight of an newborn fawn is Uniformly distributed between 2.5 and 4 kg. Suppose that a newborn fawn is randomly selected. Round answers to 4 decimal places when possible. a. The mean of this distribution is b. The standard deviation is c. The probability that fawn will weigh exactly 3.7 kg is P(x = 3.7) = d. The probability that a newborn fawn will be weigh between 2.9 and 3.5 is P(2.9 < x < 3.5) =...
15. The random variable x is known to be uniformly distributed between 70 and 90. The...
15. The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 70 to 85 is a. 0.75 b. 0.5 c. 0.05 d. 1 If P(A) = 0.38, P(B) = 0.83, and P(A ∩ B) = 0.57; then P(A ∪ B) = a. 1.21 b. 0.64 c. 0.78 d. 1.78 If P(A) = 0.62, P(B) = 0.47, and P(A ∪ B) = 0.88; then P(A ∩ B) = a....
The age of children in kindergarten on the first day of school is uniformly distributed between...
The age of children in kindergarten on the first day of school is uniformly distributed between 4.91 and 5.97 years old. A first time kindergarten child is selected at random. Round answers to 4 decimal places if possible. The mean of this distribution is _______ The standard deviation is _______ The probability that the the child will be older than 5 years old? _______ The probability that the child will be between 5.01 and 5.51 years old is _______ If...
It is believed that the Satisfaction Level of an employee is uniformly distributed between 0.1 and...
It is believed that the Satisfaction Level of an employee is uniformly distributed between 0.1 and 1.0. a. What is the probability that an employee will have a satisfaction level of exactly .75? b. What is the probability that an employee will have a satisfaction level greater than .90? c. What is the probability that an employee will have a satisfaction level of less than .40? d. What is the probability that an employee will have a satisfaction level between...
Problem 6 : The time to fly between New York City and Chicago is uniformly distributed...
Problem 6 : The time to fly between New York City and Chicago is uniformly distributed with a minimum of 100 minutes and a maximum of 150 minutes. 1.What is the probability that a flight takes less than 135 minutes? A-P(X<135)=0.5 B-P(x<135) = 0.7 C-P(X<135)=0.135 D-P(X<135)=0.15 2.What is the probability that a flight takes less than 110 minutes? A-P(x<110) = 0.2 B-P(X<110)=0.1 C-P(X<110)=1.1 D-P(X<110)=0 3.What is the probability that a flight takes more than 140 minutes? A-P(x> 140)=0.14 B-P(x> 140)=1.4...