Keiko asked 15 students how many courses they have taken so far at her college. Here is the list of answers. 24, 21, 13, 7, 27, 20, 3, 11, 17, 4, 19, 1, 14, 6, 23 What is the percentage of these students who have taken fewer than 19 courses? %

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: Which group has the largest percentage of people who prefer to travel by automobile? O child O teen…

A: From the diagram Percent of automobile prefer by child=5 Percent of automobile prefer by teen=25…

Q: In each shipment there is an average of 2%% of defective bolts. How many bolts can be expected to be…

A: (3).   An average of 212% bolts are defective. Therefore 212% of 360 dozen bolts are defective.

Q: 5.) Ms. Cyrus has 64 songs on her phone. Two- fifths of the songs are R&B songs. The rest are jazz.…

A:

Q: 70  guests at a hotel called for room service and 255 guests did not call for room service. what is…

A: Given that the total number of guests called for room service  = 70           Total number of guests…

Q: 12. Jackson has scores of 80, 90, 83, and 81 on four Math quizzes. What is the score he needs on the…

A: Let us assume that the next score is x then

Q: survey was given to 9090 high school students. They were asked if they preferred fiction or…

A: Given query is to find the percent of students in the survey,  prefer outdoor activities given they…

Q: Researchers asked 200 families whether or not they were homeowners and how many cars they had. Their…

A: We can answer the question from the table of data as below.

Q: Given: 4 = 43,0 3. What is the raw score when:

A: Let X be the raw score from normal distribution with mean (μ) = 45 and standard deviation      (σ) =…

Q: There are 150 students in the marching band, and 30 of them play the trumpet. Which number line…

A:

Q: All freshmen at Roseville High School are required to play exactly one sport. The table below shows…

A: Solution

Q: Out of 45 students, 29 go on a field trip. Which best represents the percent of the students who do…

A:

Q: In a survey, 100 people were asked if they smoke and whether or not they exercise regularly (more…

A:

Q: Loras Tyrell was curious to see if his students actually saved money by purchasing books from…

A: From the given output : Population Mean,μ = 12.75 Population Standard Deviation,σ =…

Q: One month is what percentage of a year, given that there are 7 days in a week, 4 weeks in a months…

A: One month is what percentage of a year,  given that there are 7 days in a week, 4 weeks in a months…

Q: What percentage of books read 76 books out of 80 total books

A: Solution:

Q: If 90% of the athletes who test positive for steroids in fact use them, and 10% of all athletes use…

A:

Q: n Exton School, 60% of the boys play football and 36% of the boys play ice hockey. Given that 40% of…

A:

Q: If a child psychologist wanted to determine if there is a relationship between gender of a child and…

A: Chi-square test of independence should be used here.

Q: A company took a survey about its new product. 7,200 people liked the new product and 800 people did…

A:

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: (d) If the bottom 10% of students will fail the test, what is the lowest mark that a student can…

A: Given that, the mean value is μ=75 and standard deviation σ=15. It is known that, the formula for…

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: A survey was given to 90 high school students. They were asked if they preferred fiction or…

A: so, let no. if outdoor Non-fiction be "x" total indoor + total outdoor =9050+ (30+ x )=9080+x=90x=10…

Q: At a popular vacation spot in Arizona, the Arizona Tourism Board took a survey of 100 people to…

A: Complete the two way table and Find P ( who are from Arizona or who used a car ) = ? %

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

A: Given: Median = $66,650, 90th percentile = $178,500.

Q: There are 20 fruits in a bowl. And 6 of them are apples. What percentage of the bowl are apples?

A: the formula to find the percentage is  percentage(%)=partwhole×100

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: Sam received scores of 84,86,83,90 and 87 on five tests. Hola had scores of 90,75,94,68 and 98 on…

A: Now we apply the formula of getting average = Sum of all scores / Total matches playedSo average…

Q: Brad and Lena are recording their classmates' eye color for a statistics assignment. In Brad's…

A: Brad's class: green-eyed students = 3 total students = 25 ratio(A) = 325     Lena's class:…

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: A long distance race begins with 28 runners from Team A and 28 runners from Team B. 4 runners from…

A: We have to solve given Questions.

Q: Out of 45 students, 29 go on a field trip. Which best represents the percent of the students who do…

A:

Q: 3) Two hundred students were surveyed and asked about what they prefer to eat for lunch. The table…

A: As per honor code guidelines I need to solve  only one question.

Q: A cafeteria manager surveyed a random sample of students at a school to determine which of 2 meal…

A:

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

A:

Q: Fifty students were surveyed and asked if they are taking a gym class and if they play an…

A: Total number of students is equal to 50

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: Scott surveyed 40 friends on Facebook and asked them where they were born and where they went to…

A:

Q: 4. A survey shows 47% of movie goers are males. A test is conducted to see if the proportion is…

A: Solution : Null Hypothesis : The hypothesis to be tested is is called as null hypothesis. Generally…

Q: In last year, five ranndomly selected students took a math aptitude test before they began their…

A: a) Excel Procedure: Enter X and Y in Excel>Data>Data Analysis> ‘Regression’>Select Y…

Q: Researchers asked 250 families whether or not they were homeowners and how many cars they had. Their…

A: Number of families having two or more cars       = 95 + 85      = 180 So percentage of families…

Q: In a set of 22 scores in statistics, the highest and the lowest scores were found to 89 and 25…

A: Measure of central tendency measures the central or average value of a dataset. Mean, median and…

Q: A group of adults were asked how many children they have in their families. The bar graph below…

A:

Q: 2400 people attended a basketball game. 696 of the people attending supported the home team, while…

A:

Q: The hair colours of 100 men, 94 women and 66 children were collected during a survey. What…

A: There are total 100+94+66=260 people. out of which total 4+9=13 people are with grey/white hair.…

Q: On a quick survey, respondents had to pick their favorite dessert from ice cream, cake, chocolate,…

A: Let's find.

Q: Researchers estimated that a wooded area is home to 350 blue jays. In their second sample they…

A: topic - ratio and percentage

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.