Question

The number of customers in a line at a supermarket express checkout counter is a random variable with the following probabili
0 0
Add a comment Improve this question Transcribed image text
Answer #1

From provided information,

P( 2 or fewer) = P( X =0) +P(X = 1) + P( X = 2)

P( 2 or fewer) = 0.09 + 0.26 + 0.29

P( 2 or fewer) = 0.64

Thank you!

Add a comment
Know the answer?
Add Answer to:
The number of customers in a line at a supermarket express checkout counter is a random...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Fifteen items or less: The number of customers in line at a supermarket express checkout counter...

    Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. x 0 1 2 3 4 5 Px 0.05 0.25 0.35 0.20 0.10 0.05 Compute the standard deviation σX. Round the answer to at least three decimal places.

  • Fifteen items or less: The number of customers in line at a supermarket express checkout counter...

    Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. 1 0.15 2 0.30 3 0.20 4 0.10 5 0.05 P(x) 0.20 Send data to Excel Part 1 of 7 (a) Find P(5). P(5) = 0 Part 2 of 7 (b) Find P(No less than 4). P(No less than 4) = Part 3 of 7 (c) Find the probability that no one is in line....

  • A certain market has both an express checkout line and a superexpress checkout line. Let X1...

    A certain market has both an express checkout line and a superexpress checkout line. Let X1 denote the number of customers in line at the express checkout at a particular time of day, and let X2 denote the number of customers in line at the superexpress checkout at the same time. Suppose the joint pmf of X1 and X2 is as given in the accompanying table. x2 0 1 2 3 x1     0     0.09     0.07     0.04     0.00   1     0.05     0.15  ...

  • 3. A certain market has both an express checkout line and a superexpress checkout line. Let...

    3. A certain market has both an express checkout line and a superexpress checkout line. Let X, denote the number of customers in line at the express checkout at a particular time of day, and let X, denote the number of customers in line at the superexpress checkout at the same time. Suppose the joint pmf of X and X, is as given in the accompanying table. 0 0.08 0.06 0.05 0 0 1 0.07 0.15 0.04 0.03 0.01 2...

  • A checkout counter at a supermarket completes the process according to an exponential distribution with a...

    A checkout counter at a supermarket completes the process according to an exponential distribution with a service rate of 6 per hour. A customer arrives at the checkout counter. Find the probability of the following events. a) The service is completed in fewer than 5 minutes. b) The customer leaves the counter more than 10 minutes after arriving. c) The service is completed in a time between 5 and 8 minutes.

  • 5.1A certain market has both an express checkout line and a superexpress checkout line. Let...

    5.1A certain market has both an express checkout line and a superexpress checkout line. Let X, denote the number of customers in line at the express checkout at a particular time of day, and let X2 denote the number of customers in line at the superexpress checkout at the same time. Suppose the joint pmf of X1 and X2 is as given in the accompanying table. $$ \begin{array}{cc|cccc}  & & \multicolumn{3}{|c} {x_{2}} \\ & & 0 & 1 & 2 &...

  • 3. The numbe r of customers in line at a local supermarket self-checker is a random...

    3. The numbe r of customers in line at a local supermarket self-checker is a random variable with the following probability distribution given below: 0 2 3 5 P(z) 0.10 0.25 0.20 0.10 0.05 (a) (2 points) Find P[r s2) (b) (2 points) Find Pa 2 2) (c) (2 points) Find u . (d) (2 points) Find σ.

  • A small market has two checkout lines, regular and express. Let X be the number of customers in line at a regular checkout

    A small market has two checkout lines, regular and express. Let X be the number of customers in line at a regular checkout, and Y that at the express checkout. At a particular time of the day, the joint probability mass function of X and Y is given by (a) Find the probability that the total number of customers at a given time is at most 1, that is find P(X+Y≤1) [1] (b) Fill in the table with the marginal distribution of...

  • A grocery store has both a regular checkout line and an express checkout line. Let 푋1be...

    A grocery store has both a regular checkout line and an express checkout line. Let 푋1be the number of customers in the regular checkout line at a particulartime of day, and let 푋2be the number of customers in the express checkout lineat the same time. The joint PMF of 푋1and 푋2is given in the table below. 푋20123푋10.08.07.04.001.06.15.05.042.05.04.10.063.00.03.04.074.00.01.05.06(1) How do you know this is a valid PMF?(2) What is the probability that there areexactly two customers in each line?(3) What is...

  • 2. (25 P) A random number generator was used to generate a 100 numbers listed below....

    2. (25 P) A random number generator was used to generate a 100 numbers listed below. Perform x2 goodness of fit test to check whether the data distributed uniformly in the interval [0, 1] (a= 0.05, state the hypothesis first). 0.01 0.01 0.02 0.03 0.03 0.05 0.05 0.06 0.06 0.06 0.07 0.08 0.08 0.09 0.12 0.13 0.15 0.16 0.18 0.19 0.21 0.24 0.24 0.25 0.25 0.26 0.27 0.27 0.27 0.28 0.28 0.28 0.29 0.29 0.3 0.31 0.32 0.32 0.33 0.33...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT