Kara did a survey to determine to study the types of pets that students in her school had. She surveyed 300 students and found that 40% of them had cats, 12% had both cats and dogs, and 45% didn't have either. How many of the students that Kara surveyed had dogs?

Q: How many choices are there for a person to check out 4 CDs from a library that has 25 CDs of his…

A: Given : n = 25 x = 4

Q: A survey was given to a group of 10,000 students to determine whether they wanted an outdoor…

A: The union of events A and B is defined as n(A ∪ B) = n(A)  + n(B) – n(A ∩ B).

Q: On a math exam, students must answer 5 out of 7 questions from Part A and only 2 out of 4 questions…

A: Introduction: Suppose, there are n different objects. Out of the total number of objects, r objects…

Q: The guidance department has reported that of the senior class, 2.3% are members of Key Club, K, 8.6%…

A: Solve

Q: A company conducted a marketing survey of its clientele and found that 160 own an iPhone and 89 own…

A: Given that, A company conducted a marketing survey of its clientele and found that 160 own an iPhone…

Q: A survey of 150 students found 120 like study hall, 70 like gym class, and 50 like both. How many…

A:

Q: A dog shelter is giving away 11 different​ dogs, but you have room for only 3 of them. How many…

A: From the provided information, A dog shelter is giving away 11 different dogs. There are room for…

Q: Apple decided to give an apple watch to the first person in line, an iPhone to the second person in…

A: From the given information, Apple decided to give apple product to all three persons who stand up in…

Q: A student is to answer 12 out of 15 questions on an exam. How many choices does he have?

A: The total number of questions in the exam is 15. The student has to answer 12 out of 15 questions.…

Q: An ice-skating rink inspects 25 pairs of skates and finds 2 pairs to be defective. rink has 150…

A: Given       an ice -skating rink inspects 25 pairs of skates…

Q: A manufacturer knows from experience that for every 100 widgets that are produced at her factory, 3…

A: Given Information- Out of every 100 widgets produced 3 will be defective. Using Unitary method We…

Q: If you expect to have four times as many women (compared to men) at a 20-person Emergency Room…

A:

Q: In a survey of middle school students, 70% play basketball and 40% play basketball and football. Of…

A:

Q: The number of ways a team of 2 players can be chosen out of 12 players is

A: For the following question,

Q: A random study reported that 70% of very-low-birth-weight bables graduate from high school by age…

A: we have to find out expected value..

Q: When taking a 18 question multiple choice test, where each question has 4 possible answers, it would…

A: Given: Total number question = 18 The number of possible answers = 4.

Q: In a survey at a local university, 25% of students say that they get less than the recommended eight…

A: Given  Total students = 3900 Percentage of Students get less than the recommended eight hours of…

Q: Which company should Tiago chose? Explain why.

A: Given: Company A-  Mean = 845€ Median = 800 € Standard deviation = 260€ Company B-  Mean = 875€…

Q: How many matches will be required to determine the champion in a single elimination tennis…

A: In single elimination tournament, each match eliminates one player. If all up there are x players,…

Q: When taking a 10 question multiple choice test, where each question has 5 possible answers, it would…

A: Given data, n = 10 p = 1/5 = 0.2

Q: When taking a 17 question multiple choice test, where each question has 3 possible answers, it would…

A: Note:Since no other information is provided, we have assumed that it will be unusual, if the…

Q: A fan of country music plans to make a custom CD with 12 of her 25 favorite songs. How many…

A: Given dataTotal songs N = 25 No of combinations for size 12 is given by

Q: In a survey of 1000 students it was found that 840 own a cell phone, 450 own an MP3 player and 370…

A:

Q: Of the trains that recently arrived at Hampton Station, 4 were on time and 2 were late. Considering…

A: It is an important part of statistics. It is widely used.

Q: Among 120 pupils, it came out that 40 like both biscuits and toffees, 16 like neither and twice as…

A: Given: total no of people=120 No. of people who like neither biscuits and toffees=16 No. of people…

Q: In a survey conducted by Helena, a financial consultant, it was revealed that of her 400 clients,…

A:

Q: Kathleen had a bag of candy-coated chocolates. Of the 60 candies in the bag, 20% were red, 30% were…

A: In certain situations we have to find the part of the part of a whole. In this case, we find one…

Q: Molly recorded how many nuts of each type she blindly grabbed from a can of mixed nuts.     walnuts…

A: The probability of walnuts is 50/100 =1/2

Q: of the toys that John had were cars and the rest were trains. After giving away - How many toys did…

A: First we will form the equations corresponding to the given statement then solving those equations…

Q: The high tech industry claims that women have the same chance of being hired as men. If this is so,…

A: In this question, we need to find the expected number of company to have 11 or more female…

Q: A recent survey by a local radio station shows that 3 of 8 listeners like a new song while 1/4 hate…

A:

Q: From a survey of 100 college students, a marketing research company found that 50 students owned…

A: Given form a survey of 100 college students a marketing researchcompany found that 50 student…

Q: The manager of the winning soccer team chooses three of the 20 members to be interviewed by a sports…

A:

Q: If I have 8 apples and take away 4, how many do i have left?

A: You have 8 apples and 4 apples are being taken away. This means number of apples which you have is…

Q: A teacher chooses 3 of her 22 students to help clean the room after school. In how many ways can the…

A:

Q: At a liberal arts school, a survey of 100 students indicates that 68 enjoy their English class while…

A: Let,Number of students who enjoys English subject = n(E)Number of students who enjoys Mathematics…

Q: At a lottery, 100 tickets were sold and three prizes are to be given. How many possible outcomes are…

A:

Q: A company conducted a marketing survey of its clientele and found that 215 own an iPhone and 106 own…

A: It is given that 215 of the clients own an iPhone and 106 own an iPad. If 19 clients own both an…

Q: In a group of 65 video game players, 50 bought the new Pokemon game that comes in two versions. 30…

A: The formula for the union of the sets is n(A∪B)=n(A)+n(B)n(A∩B). Here, A and B are two sets. The…

Q: A college survey was taken to determine where students study. Of 140 students s cafeteria, 76…

A:

Q: The number of ways in which 2 cards can be chosen or selected from a total of 6 cards equals:

A: We are asked to find the number of ways of selecting 2 cards from 6 cards

Q: Find the number of different ways a grade A, B, C or D can be assigned to three students of a class…

A: Suppose we have three students x , y and z Now  x has 4 grade options y has 3( As one is already…

Q: If the number of smokers in a sample of 40 students selected from university A is 14 and the number…

A: Given data,For University An1=40x1=14p1=x1n1 =1440=0.35For University Bn2=380x2=84p2=x2n2…

Q: In a group of 500 students during vacation, 23% likes to go shopping only, 74% loves to stay at…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: As a television executive, you have been given 22 shows to choose from to run during your prime time…

A: Total number of shows Available n = 22 Total shows to be selected r = 12

Q: As a television executive, you have been given 19 shows to choose from to run during your prime time…

A:

Q: A survey was conducted to determine the number people who own different styles of vehicles. The…

A:

Q: On a certain test, the average passing score is 72 while the average failing score is 50. If the…

A: Lets say there are 'm' number of students a1, a2,.........am passed the test and 'n' number of…

Q: in a mall survey, 200 consumers were asked where they did their gift shopping; Macy’s, JC Penny’s,…

A: Total consumer = 200 consumers Total number of people who shopped at least at two different stores =…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.