A group of preschoolers has 8 boys and 24 girls. What is the percentage of girls to all children?

Q: In a school band of 24 students, 9 students play brass instruments. What percent of the members play…

A: The total students in the and is 24. The number of students that play brass instruments is 9.

Q: in the U.S, 37% of households have dogs, 30% of households have cats, and 7% of households have both…

A: Addition rule of probability:Addition rule of probability indicates the happening either of the…

Q: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

Q: What proportion of students studied more than 4 hours?

A: Given that Total number of students = 240 Number of students who studied more than 4 hours = 50

Q: The data shows that the percentage 015

A: Given the data shows that the percentage of female cigarette smokers in a certain country declined…

Q: Given the following data, Number of patients positive for VDRL is 56. Total number of patients is…

A: We have given that,  Number of patients positive for VDRL (X) = 56 and Total number of patients (N)…

Q: If 42% of students have a dog , 23% of students have a cat and 3% have a cat and a dog. What percent…

A:

Q: Among the people in the age class "18 - 24", what is the percentage of people who prefer "Soft…

A: Given that Number of people who prefer soft drinks and in the age class 18 - 24 = 90 Number of…

Q: Of 60 patients treated with a certain medication, 24 showed no improvement. What percent of patients…

A: Total patient=60 Patient who showed no improvement=24 To calculate: what percent of patients…

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 4000 panels. Ten percent…

A: Given that Plant A produced 4000 panels and defective is 10% Defectives from plant B is 3%,  overall…

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: In a town, out of 200 families with 4 children each, find the percentage of families having (i) 2…

A:

Q: A bin contains 120 ears of white corn and yellow corn. Of these, 78 ears are yellow. What percent of…

A: We are given that a bin contains 120 ears of white corn and yellow corn. Of these, 78 ears are…

Q: At Roxbury Community College, 7 out of every 10 students take Introduction to Statistics. If there…

A: Given that, At some college 7 out of every 10 students take introduction to statistics. Formula:…

Q: There are 280 freshman, 300 sophomores, and 320 seniors. What percentage of the school is…

A: It is given that Number of freshman = 280 Number of sophomores = 300 Number of seniors = 320 Total =…

Q: Raina ran for president of the chess club, and she received 39 votes. There were 65 members in the…

A:

Q: If 55% of the books have been signed out, what percent of the books have not been signed out?

A: Given that: According to the question, 55 % of the books have been signed out. Signed  out=55…

Q: A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys as a…

A: The group has, 15 boys and 12 girls. So, the ratio of girls to boys is, 12 : 15 = 4 : 5

Q: A group has 20 man and 22 women what is the percentage of the women in the group

A: Given that, Total number of people = 20+22= 42 Man = 20 Women= 22

Q: If erwan owns 120 books of which 70% are fantasy and Julie has 80 books of which 25% are fantasy.…

A: Given, Erwan has 120 books of which 70% are fantasy books, and Julie has 80 books out of which 25%…

Q: A recent study of young executives showed that 30 percent run, 20 percent bike and 12 percent do…

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: In a town, 39% of the citizens contributed to the Republicans, 49% contributed to the Democrats, and…

A:

Q: Forty percent of the 25 customer who came this morning are adults and the rest are teen. How many…

A: Given: 40% of 25 customers are adults.

Q: A student has scores of 72%, 74%, and 78% on three exams. What percent score does he need on the…

A: Here we solve the inequality for x . x= score for the fourth exam.

Q: At Roxbury Community College, 7 out of every 10 students take introduction to Statistics. If there…

A: given data  N = 2500 students total in college  7 out of every 10 students take introduction to…

Q: what percentage of bus drivers had 3 or more traffics acccidents

A: From the provided information, Sample size (n) = 700 Total frequency of 3 or more traffic accidents…

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: Given information Median family income = $66650 90th percentile for 2015 four-person family income…

Q: What percentage of people are men who like movies?

A:

Q: At a class, 40% are sophomores, and 50% of the students like fencing. Of the students that like…

A:

Q: There are 12 boys in a class of 30 students. What percentage of the class is boys?

A:

Q: In a recent survey of 180 people who drink coffee or tea, it was found that 137 drink coffee and 74…

A:

Q: You have a bag of marbles that contain 292 green, 239 red, 76. Blue, and 209 yellow ones. What is…

A: You have a bag of marbles that contain 292 green, 239 red, 76. Blue, and 209 yellow ones. What is…

Q: What percentage of the blocks are red?

A:

Q: If the airline sells 644 tickets on the night flights, how many unsold tickets can the airline…

A:

Q: At a local Dunkin'donuts, a survey showed that out of 1280 customers eating lunch, 640 ordered…

A:

Q: Jason reads a report that says 80% of U.S. high school students have a computer at home. He believes…

A: Given- p=claimed proportion =80%=0.8   and   n=sample size=60 To check- The conditions are satisfied…

Q: What percentage of the widow Students are female

A:

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.

Q: Two factory plants are making tv panels. Yesterday, plant A produced 8000 panels. Seven percent of…

A: It is given that plant A produced 8000 panels yesterday.The total production of panels will be 8000…

Q: According to the U.S. Department of Labor, the median annual salary in 2003 for a physical therapist…

A:

Q: Which player had the higher average points when compared to the other players on his team? O Fredo

A: Given information: The average points and standard deviations for the players Freda and Kari…

Q: What percentage of the widow students are  female

A: Total widowed students=2+3=5Total female students who are widowed=3

Q: The median salary of the 1,073 teachers in a large public school district is 38,850 dollars. If the…

A: From the given information, Total number of teachers =1073 Median salary of a teacher = $ 38,850…

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 6000 panels. Ten percent of the…

A: Two factory plants are making TV panels. Yesterday, Plant A produced 6000 panels. Ten percent of the…

Q: In a company, 22% of the workforce are in sales, 56% of the workforce are male and 65% of the…

A: Probability is defined as a number between 0 and 1 representing the likelihood of an event…

Q: What is the percentage of players whose age is less than 32?

A: here given  mean = 33 year  standard deviation  =  2 year x= retirement age

Q: If 6units get 50% and 50units get 25%, how much percentage does 27 get?

A: If 6units get 50% and 50units get 25%, how much percentage does 27 get?

Q: The table shows the ratios of black socks to white socks in the women's and men's department of a…

A:

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.