On a popular app, users rate restaurants as 1 , 2 , 3 , 4 , or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the number of stars of the selected rating. Here is the probability distribution of X . Value x of X 1 2 3 4 5 P=Xx 0.23 0.18 0.11 0.26 0.22 For 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 :

On a popular app, users rate restaurants as 1 , 2 , 3 , 4 , or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the number of stars of the selected rating. Here is the probability distribution of X . Value x of X 1 2 3 4 5 P=Xx 0.23 0.18 0.11 0.26 0.22 For 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 :

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

Related questions

Q: To avoid detection at customs, a traveler places 4 narcotic tablets in a bottle containing 10…

A: Random Variable: In probability theory, a random variable is a variable whose values depend on…

Q: Suppose that the value of stock varies each day from $16 to $25 with a uniform distribution. Find…

Q: A police department reports that the probabilities that 0,1,2,3 burglaries will be reported in a…

Q: After giving an exam to a group of students, the grades and gender are summarized below. Grades vs.…

A: The contingency table is given as follows: A B C Row Total Male 6 11 4 21…

Q: Based on historical data kept by an airline, the probability distribution for passengers getting…

A: Solution: Let X be the number of individuals bumped off the flight. The given probability…

Q: What is the probability that a randomly selected survey participant prefers the NFL? (Round to four…

A: Note : According to our guidelines we are solving only first three sub-parts of a question and the…

Q: About 2% of children in the United States are allergic to peanuts. Choose three children at random…

A: Given information is,Probability of being allergic probability of not being allergic

Q: What is the probability that over half the rooms will be rented out next Saturday?

A: Let X represent the number of rooms that are rented out on any given Saturday.

Q: Do you carpool? Let X represent the number of occupants in a randomly chosen car on a certain…

A: The standard deviation () for the variable Xi(i=1.2...,5)=number of occupants in a car, with the…

Q: A fitness center bought a new exercise machine called the mountain climber. They decided to keep…

A: The probability distribution is given below as follows: Obtain the value of mean. The value of mean…

Q: A particular lake is known to be one of the best places to catch a certain type of fish. In this…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: A particular lake is known to be one of the best places to catch a certain type of fish. In this…

A: A particular lake is known to be one of the best places to catch a certain type of fish. In this…

Q: The number of inches of rain that fell during the month of April was recorded over time. The number…

A: a) Total number of years = 4+13+21+10+2=50 years. To find probabilities we divide all frequencies…

Q: Do you tailgate the car in front of you? About 30% of all drivers will tailgate before passing,…

A: Given information:The size of the passed-by vehicles is n = 8. It is said that it is a random…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: The data represent the results for a test for a certain disease. Yes No Total Positive 137 18…

Q: A ballet instructor is interested in knowing what percent of each year's class will continue on to…

A: Let X be the random variable having probability mass function then we have to complete the given…

Q: The time it takes a technician to fix a computer problem is exponentially distributed with a mean of…

A: Solution: Let X be the time it takes a technician to fix a computer problem. From the given…

Q: Answer the questions. Let X represent the number of occupants in a fandomly chosen car on a certain…

A: Given probability distribution is : X 1 2 3 4 5 P(X) 0.67 0.13 0.09 0.01 0.10

Q: (a) What is the probability that the airline can accommodate everyone who shows up for the flight?…

A: Here given Airlines sometimes overbook flights. Suppose that for a plane with 100 seats, an airline…

Q: Construct a probability distribution and draw a histogram for the data of the probability…

A: Let X = Number of pieces the customer orders in the restaurant.

Q: Do you carpool? Let X represent the number of occupants in a randomly chosen car on a certain…

A: Given x 1 2 3 4 5 P(x) 0.64 0.13 0.09 0.01 0.10

Q: Adult men's heights are normally distributed with m = 70 inches and s= 2.6 inches. What is the…

A: Answer Given,The mean = 70The standard deviation = 2.6By using the standard normal distribution

Q: A Registration - Paym.. R6.1. Knees Patients receiving artificial knees of experience pain after…

A: The properties of the discrete probability distribution is,Properties for discrete probability…

Q: We are interested in analyzing data related to college football. Use S to denote the team is in the…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: Find the mean of the given probability distribution. A police department reports that the…

Q: A commuter must pass through 5 traffic lights on her way to work each day, and will have to stop at…

Q: A supermarket employs cashiers, managers, and cleaner. The distribution of employees according to…

A: We have to find given probability.

Q: Maggie is a social worker. For the last 225 days she has recorded her client caseload per day. The…

A: Given frequency table: Total frequency is 225 Probability(x) = frequency(x) / total frequency…

Q: a. Compute the mean number of accidents per day. H = 1.63 (Type an integer or a decimal. Do not…

Q: Find the probability of earning a medal. Group of answer choices

A: Given: Probability distribution table : To Find the probability of earning a medal. Medal…

Q: Let X = {Email, In Person, Instant Message, Text Message}; P(Email) = 0.06 P(In Person) = 0.55…

A: From the provided information, The probability distribution table can be constructed as: X…

Q: A commuter must pass through 5 traffic lights on her way to work each day, and will have to stop at…

A: Given:

Q: The table shows the distribution, by age and gender, of the 28.5 million people in a certain region…

Question

On a popular app, users rate restaurants as

, or

stars. Suppose a rating is randomly selected from all the ratings on the app. Let

be the number of stars of the selected rating. Here is the probability distribution of

Value x of X	1	2	3	4	5
P=Xx	0.23	0.18	0.11	0.26	0.22

For parts (a) and (b) below, find the probability that the randomly selected restaurant rating has the described number of stars.

(a)

or more:

(b) Fewer than

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Information given is

VIEW

Step 2: a)Finding the probability

VIEW

Step 3: b)Finding the probability

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

Below, the two-way table is given for a class of students. Freshmen Sophomore Juniors Seniors Total Male 4. 6. 2 Female 4. 3 Total If a student is selected at random, find the probability the student is a junior given that the student is male. P( Junior | Male ) = [ ? ]% Round to the nearest whole percent. Enter DELL
The number of needed repairs while under warranty for a Sure Cut lawnmower has a population distribution as shown in the probability histogram below. The population mean is also given. Population 0.6 - 0.5- 0.4- population mean: u=1.15 0.3- 0.2- Number of repairs Probability
Find the mean of the given probability distribution. A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.51, 0.35, 0.13, and 0.01, respectively. A. μ=1.50 B. μ=0.64 C. μ=1.15 D. μ=0.25
Construct a probability distribution curve for the experiment and random variable. a. EXPERIMENT: Randomply picking 3 children in an orphanage with equal number of boys and girls to join a family. (B = boy ; G = girl) b. RV: Y which represents the number of girl to be picked.
A data scientist tracked how many cups of coffee she drank every day at work over the course of a year. She used the data to build a probability distribution where the random variable CCC represents the number of cups of coffee she drank on a given day. Here is the distribution: Calculate the mean of CCC.
A certain virus affects 0.7% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false positive) Fill out the remainder of the following table and use it to answer the two questions below based on a total sample of 100,000 people. a. Find the probability that a person has the virus given that they have tested positive. Round your answer to the nearest hundredth of a percent and do not include a percent sign. b. Find the probability that a person does not have the virus given that they test negative. Round your answer to the nearest hundredth of a percent and do not include a percent sign.
SPzai1 33. Obtain the probability distribution of X, the number of heads in three tosses of a coin
The time to the nearest whole minute, that a city bus takes to go from one end of its route to the other has the probability distribution shown. Please write your answer readable. Thank you.
A ballet instructor is interested in knowing what percent of each year's class will continue on to the next, so that she can plan what classes to offer. Over the years, she has established the following probability distribution. • Let X = the number of years a student will study ballet with the teacher. • Let P(x) = the probability that a student will study ballet x years. Complete the table below using the data provided. (Enter exact numbers as integers, fractions, or decimals.) x P(x) x*P(x) 1 0.10 2 0.10 3 0.20 4 5 0.20 6 0.20 7 0.05
Find the mean of the given probability distribution. The probabilities that a batch of 4 computers will contain 0,1,2,3, and 4 defective computers are 0.5997, 0.3271, 0.0669, 0.0061, and 0.0002,respectively. Round answer to the nearest hundredth.
Below is a table of the estimated number of cell phones per household in a rural town. The number of cell phones, x, can be approximated by the following probability distribution.
Assume that A, B and C are three independent events such that P (A) = 0.2, P (B) = 0.6 and P (C) = 0.4. Determine the probability that exactly one of these events will occur. Answer with the probability in percent.