Of the trains that recently arrived at Hampton Station, 4 were on time and 2 were late. Considering this data, how many of the next 12 trains would you expect to be on time? trains

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: The data below represents the number of classes students have take at MSJC for our class. 15 7 3 18…

A:

Q: What percent of students had an IQ of at least 120​?

A: From the given histogram, the frequency table can be observed as shown below:

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: Given the following data, what is Q3 and D7 ?   86, 70, 73, 82, 79, 76, 69, 78, 87, 73, 66, 77

A:

Q: A milk company surveyed some of their customers to find out how many people like chocolate milk…

A:

Q: If the number of respondents in the study was approximately 44,947, estimate how many stated that…

A: answer is below

Q: A librarian surveyed students checking out library books.  He asked each student how many books…

A: Solution Given the data shows the number of books read by students per week.

Q: In a class of 95 students, the heights of two students were measured and found to be 165 cm. If this…

A:

Q: A teacher conducted survey of one of her classes to see where some of her students had gone over…

A:

Q: Given the following data: 86, 70, 73, 82, 79, 77, 69, 77, 87, 73, 66, 77 Less than what number is…

A: We can find the number which is less than the lower 70% of the data as below.

Q: . In Exton School, 60% of the boys play football and 36% of the boys play ice hockey. Given that40%…

A: Let us define the events as, A: Boys who play football.B: Boys who play ice hockey. From the given…

Q: Andrea conducted a survey in which she collected data on the percentage of people who like horror…

A: Pie chart: A pie chart is used to graphically display the whole population of categorical data into…

Q: What percentage of scores would be above 567?

A:

Q: Out of 500 car owners investigated, 400 owned car A and 200 ownedcar B, 50 owned both A and B cars.…

A: The total number of investigated cars is 500. Also given that the total number of people who owned…

Q: The median of a group of individuals’ BMIs whose BMIs are 20.47, 21.92, 23.32, 23.41, 25.7, and 30.1…

A: 20.47 21.92 23.32 23.41 25.7 30.1

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

A:

Q: Keiko asked 15 students how many courses they have taken so far at her college. Here is the list of…

A:

Q: We made a survey with the number of people in a household and the number of times they get sick…

A: Solution: Let x be the number of people in a household  y be the number of times they get sick in 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: Sarah is conducting a research only study in which one group of participants consume one cup of…

A: The study is about assessing attention levels of these participants.

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: 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: If in a discrete data, 75% of the values are less than 30, then......?

A: we know that,  If Q1 is first quartile then we can say that 25% data points are below Q1. If Q2 is…

Q: For his Sociology project, Keith chooses a stratified sample of 10%, which reflects these age…

A: here given , for his sociology project ,keith chooses a stratified sample of 10% , so here selecting…

Q: At an art camp, students must specialize in one artistic medium. The camp director looked at her…

A:

Q: During one shift, the express lane clerk recorded how many times customers violated the "10 items or…

A: Given data: From the graph, constructing frequency distribution table as: Class Interval…

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

A:

Q: Find the first quartile (Q1), second quartile (Q2), and third quartile (Q3). If Baby A weighs 7.98…

A: The following are weights (in pounds) of newborn babies in a certain hospital in a period of 1 week:…

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

A:

Q: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

A: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

Q: Raymond wants to estimate the percentage of parents that use cloth diapers. He asks a randomly…

A: According to the provided information, The data set will represent the collection of response…

Q: Last week a gumball machine dispensed 10 white gumballs and 16 other gumballs. Considering this…

A: Introduction: If X ~ Binomial (n, p), then the probability mass function of X is: Here, n is…

Q: The following is data for the first and second Quiz scores for 8 students in a class.

A: Given the data for the scores of first and second score for 8 students. The excel steps to obtain…

Q: An airline food service found that a recent flight of 120 passengers ordered dinner as depicted in…

A:

Q: Find the D, for the following data 11, 25, 20, 15, 24, 28, 19, 21

A: We have given that,  The data set is,  11, 25, 20, 15, 24, 28, 19, 21 Then, We will find the 6th…

Q: Mr. White collected data from his eighth grade class on whether they prefer the zoo or the museum.…

A:

Q: Out of 1000 people surveyed, 850 said they like chocolate.  What proportion of people surveyed said…

A: Given: The total number of people surveyed is 1000 850 people said they like chocolate We have to…

Q: The seniors in my math classes were asked about whether they would pay for either a senior trip or a…

A: The question is about categorical data analysis Given :   To test : A senior trip is more popular…

Q: In a survey of 3063 adults aged 57 through 85 years, it was found that 80.8% of them used at least…

A: Number of adults surveyed, n = 3063 And proportion of them used at least one prescription…

Q: Restaurants often slip takeout menus under Ron's apartment door. So far, Ron has collected 6 menus…

A: Given problem is : Restaurants often slip takeout menus under Ron's apartment door. So far, Ron has…

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

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

A:

Q: A lecturer selected 300 students in the college and classified the results of Business Statistics…

A:

Q: Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85,…

A: Given that Katrina scores on the first four exams are 71, 69, 85, and 83 and suppose she scores x…

Q: The national profession exam for registered nurses, the NCLEX, has pass a rate of 85% for the first…

A: According to the given information in this question It follows binomial distribution with parameters…

Q: In a survey of 3343 adults aged 57 through 85​ years, it was found that 83.3%of them used at least…

A: Obtain the number of the 3343 subjects used at least one prescription medication. The number of the…

Q: On a multiple choice test with 9 questions, each question has four possible answers, one of which is…

A: It is given that there are 9 questions and each question having four possible, one of which is…

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.