On a popular app, users rate restaurants as 1, 2,stars of the selected rating. Here is the probability distribution of XX.Value x of X2ly selected from all the ratings on the app. Let X be the number ofWERP(X=x) 0.21 0.20 0.11 0.24 0.24For parts (a) and (b) below, find the probability that the randomly selected restaurant rating has the described number of stars.(a) 3 or more:(b) Fewer than 4:

Given:XP(X=x)10.2120.2030.1140.2450.24

Answered: On a popular app, users rate…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

Let the probability of rainfall occurrence on any day in the month of December be 0.3. If you are wishing a no-rainfall 7-day period as you are planning for a 7-day study tour. Find the probability that the rainfall will not occur in these 7 days. Find the probability of 1 rainy day during these 7 days.
In a recent poll of voters, 20% were displeased with both candidates. If 3 people were picked at random. find the probability that at least one liked one of the candidates.
Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes. If 25 adult smartphone users are randomly selected, find the probability that exactly 19 of them use their smartphones in meetings or classes. The probability is. (Round to four decimal places as needed.)
In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 66 % of the time. Find the probability that among 7 guests surveyed exactly 5 guests like to stay at an overnight lodge in the park.P(x = 5)
Make a histogram of the probability distribution of X. Describe its shape.
Suppose we played roulette x5 times (where x = 3 is the last digit of your student ID) and each time we bet on the number 17. In each game, xthe probability of winning is 1/37. Calculate the probability P(X = z), where z is the second-to-last digit of your student ID (in this case, z = 5). Draw the probability distribution function graph for the given scenario. Also, calculate the probability of winning less than 5 timesDo this task in R commander.
The records of an Italian shoe manufacturer show that 10% of shoes made are defective. Assuming independence, find the probability of getting 2 defective shoes in a batch of 12.
The proportion of eligible voters in the next election who will vote for the incumbent is assumed to be 53.5%. What is the probability that in a random sample of 440 voters, less than 48.3% say they will vote for the incumbent? Probability =
Gg.94. According to Baseball Insider Magazine 25% of major league pitchers are left-handed. A recent report shows that 60% of left-handed pitcher undergo rotator cuff surgery, while 30% of right-handed pitchers undergo rotator cuff surgery. If a major league pitcher underwent rotator cuff surgery yesterday afternoon, what is the probability that this pitcher was right-handed and underwent rotator cuff surgery?

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS