In a particular class, there are 3 freshmen, 5 sophomores, 11 juniors, and 2 seniors. If the instructor randomly chooses a student to answer a question in class, what is the probability that the student chosen will be a freshman?
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math
A class consist of 2/5 freshman,1/4 sophomores, and 1/10 juniors; the rest are seniors. What fraction of class are seniors?

math
7 freshmen, 10 sophomores, 7 juniors, and 8 seniors are eligible to be on a committee. In how many ways can a dance committee of 18 students be chosen? In how many ways can a dance committee be chosen if it is to consist of 5 freshmen, 6 sophomores, 4

Math
The ratio of the number of freshman to old students to juniors to seniors on a college basketball team is 4:7:6:8.what percent of the team are old students?

Math
A club consists of 8 seniors, 7 juniors, and 4 sophomores. A subcommittee consisting of 3 seniors, 2 juniors, and 1 sophomore will be chosen. How many different such subcommittees are there?

PreCalculus
Consider a class with 10 sophomores, 8 juniors, and 6 seniors. Two students are selected at random. 1) What is the probability of selecting 1 junior and 1 senior. 2) Find the odds of selecting two students who are not seniors. How do I set these up to

statistics
In a particular class, there are 3 freshmen, 5 sophomores, 11 juniors, and 2 seniors. If the instructor randomly chooses a student to answer a question in class, what is the probability that the student chosen will be a freshman?

Math
1. At a basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended was 3 to 4. The ratio of the number of juniors who attended to the number of seniors who attended was 7 to 6. What was the ratio of the number

Geometry
A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times; each junior's name, 2

psychology
in his research, Dr. Caulfiel wants compare levels of tests anxiety among high school students in grade 10 and 12. His hypothesis is that seniors will have higher levels of test anxiety than sophomores will. His theoretical definition of test anxiety for

Quantitative Analysis
The students at Littlewood Regional High School cut an average of 3.3 classes per week. A random sample of 117 seniors averages 3.8 cuts per week, with a standard deviation of 0.53. Are seniors significantly different from the student body as a whole?

statistics 2
A football team consists of 20 each freshmen and sophomores, 15 juniors and 10 seniors. Four players are selected at random to serve as captains. Find the probability that: a) all four are seniors b) There is one each: freshman, sophomore, junior and

Probability  Math
According to the record of the registrar's office at a state university, 35% of the students are freshman, 25% are sophomore, 16% are junior, and the rest are senior. Among the freshmen, sophomores, juniors, and seniors, the portion of students who live in

Algebra 2
Amanda surveyed 20 juniors and seniors at Delamar high school to find the number of hours per week they spend working at parttime jobs. Her results are shown below. Juniors: 20,10,20,10,15,0,0,10,20,15 Seniors: 20,20,10,10,0,0,0,10,0,10 which statement

math
There are ten seniors and five juniors in the Math Club at Jefferson High School. In how many ways can a math team consisting of four seniors and three juniors be selected from members of the Math Club?

Math
Determine whether the following statement makes sense or does not make sense, and explain your reasoning: By modeling attitudes of college freshmen from 1969 through 2006, I can make precise predictions about the attitudes of the freshman class of 2020. A)

Math
A college class with 30 sophomores, 18 juniors, and 12 seniors is divided into project groups where each group has the same number of sophomores, juniors, and seniors. What is the greatest number of groups that can be formed? How many sophomores, juniors,

math
Mr. Hauseman has 17 students in his class, three of whom are freshmen, and the rest are from other classes. He is going to draw two students randomly to be partners. He calculates the probability of drawing a freshman and then a junior to be 9 136 . How

Statistics
According to the record of the registrar's office at a state university, 35% of the students are freshman, 25% are sophomore,16% are junior and the rest are senior. Among the freshman, sophomores, juniors and seniors, the portion of the students who live

math
In a class of 80 seniors, there are 3 boys for every 5 girls. In the junior class, there are 3 boys for every 2 girls. If the two classes combined have an equal number of boys and girls, how many students are in the junior class?

Probability  Check
Could someone check these answers for me. Thanks 1. (3x+y)^7 = 2187x^7 + 5103x^6y + 5103x^5y^2 + 8505x^4y^3 + 2835x^3y^4 + 567x^2y^5 + 63xy^6 + y^7 2. Eight people are boarding an airplane. Two have tickets for first class and board before those in the

Math
At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended was 3 to 4. The ratio of the number of juniors who attended to the number of seniors who attended was 7 to 6. What was the ratio of the

Geometry
In a class of 50 high school juniors, 32 students either play a sport or are in the marching band. There are 22 juniors who playa sport and 16 who are in the marching band. What is the probability that a randomly selected junior plays a sport and is in the

Probability and Statistics
For questions 6  10 use the chisquared distribution to test the hypothesis. 6) A restaurant owner wants to see if the business is good enough for him to purchase a restaurant. He asks the present owner for a breakdown of how many customers that come in

english
I have to write a compare and contrast essay for my Freshmen comp. class, the topic I chose is cockroaches VS. Beatles. Im not sure if this is risky, because i don't really know my professor, but i cant find another topic that i can successfully wright

chapter 5: Ratios & Proportions
Out of the 248 seniors, 112 are boys. What is the ratio of boys to the total number of seniors?

Statistic
I pick a. Is it correct? Which of the following measurements is likely to have the least variation (the smallest standard deviation)? a. The volume of liquid in a simple of unopened 2liter bottles of sodas. b. The SAT scores of a class of graduating high

math
A class consists of 2/5 freshmen, 1/4 sophomores, and 1/10 juniors; the rest are seniors. What fraction of the class is seniors? Please help ASAP!!! :(

Algebra 2
Amanda surveyed 20 juniors and seniors at Delmark Highschool to find the number of hours per week they spend working at part time jobs. Her results are shown below Junior  20,10,20,15,0,0,10,20,15 Senior  20,20,10,10,0,0,0,10,0,10 Which statement about

algebra
A school dance committee is made up of 3 freshman, 5 sophomores, 2 juniors, and 4 seniors. How many ways are there to sit the committee in a row at a meeting if the students must sit together by grade? How many ways are there to sit the committee in a row

Probability
According to the record of the registrar's office at a state university, 40% of the students are freshman, 25% are sophomore, 20% are junior, and the rest are senior. Among the freshmen, sophomores, juniors, and seniors, the portion of students who live in

Math
What percentage of the students at Greenville High School are seniors Freshman 125 Students Sophomores 80 Students Juniors 175 Students Seniors 120 Students A. 12% B. 14% C. 24% D. 40% E. 75%

Math
By 7:00P.M., 1/3 or the junior class has arrived at a school dance. By 8:09PM., 30 more juniors had arrived, raised attendance to 1/2 of the juniors class. How many people are in the juniors class? I don’t understand.. can someone help? A 30 B90 C120

statistics
True or false> in a physics class there are 9 juniors and 21 males. Then there must be 30 male juniors in this class.

Grammar
Which of the following combines the sentences below by coordinating? Senate pages may be between fourteen and seventeen years old. Pages in the House must be high school juniors or seniors. A.Senate pages may be between fourteen and seventeen years old,

math
1.Among 90 pieces of mail delivered to the library of a college,50 are addressed to the faculty of Business Administration and 40 are addressed to the Communication faculty.if two of these pieces of mail are delivered to the Dean's office by mistake,and

Algebra 2
write an equation to solve each problem There is only one freshman in the cast of the high school musical. There are 6 sophomore and 11 juniors. One third of the cast are seniors. How may seniors are in the musical? *Please show me the work on how to do it

Math
A bowl contains pieces of paper with the names of 27 freshman, 33 sophomores, 30 juniors, and 42 seniors. Find the probability of the outcome. Enter your answer as a decimal, rounded to the nearest hundredth. P(junior or senior) = 0.2 An animal is randomly

SAT Math
All of the students who took chemistry at Groveton High School last year were juniors or seniors, as shown in the table below. If 80% of the students who took chemistry passed, then what fraction of the students in the combined junior and senior classes

Algebra
You have the numbers 125 written on slips of paper. If you choose a slip at random, what is the probability that you will select a number that is divisible by 4? 1/5 6/25***? 4/25 2/3 You have the numbers 124 written on slips of paper. If you choose a

statistic
here are five seniors in a class, for each situation, write how the binomial formula is used to calculate the probability. a) In how many ways can you choose one senior to represent the group? b) In how many ways can you choose two seniors to represent the

Statistics
74% of freshmen entering public high schools in 2006 graduated with their class in 2010. A random sample of 81 freshmen is selected. Find the probability that the proportion of students who graduated is greater than 0.750 . Write only a number as your

Math
Sara is selling tickets to a highschool festival. She sold 10 less senior tickets than junior tickets and she sold 3times as many sophomore tickets as junior tickets. Senior tickets cost $3, Junior tickets cost $5, and sophomore tickets cost 7$. sara

math 12
A committee of 6 is to be chosen from the 25 members of the student council (including the executive) to organize Spirit Week. In how many ways can this be done if: a) there are no restrictions b) there are 14 junior members and 11 senior members; the

math
a class of 51 students ,23 are freshman,and 28 are juniors what fraction of students are freshaman

Statistics
The admissions counselors at rainy University believe that the freshman class they have just recruited is the brightest yet. If they want to test this belief (that the freshmen are brighter than the other classes), what are the null and alternative

Maths
1) Suppose of the 4,000 freshmen at a college everyone is enrolled in a mathematics or an English class during a given quarter. If 2,000 are enrolled in a mathematics class, and 3,000 in an English class, how many are enrolled in both a mathematics class

Algebra
There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many boys are in the senior class?

Stastics
Can someone help me and let me know if what I have solved is correct. A researcher randomly surveyed 300 high school seniors and determined 225 stated they drive a car to high school. We are interested in the population proportion of seniors who drive a

math
there is 2 freshmen, 4 sophomores, 8 juniors, and 15 seniors. A local television station wants to interview 8 students from the team. How many different ways can exactly 4 seniors and 4 juniors be selected for the interview?

Algebra
You want to determine the number of text messages students at your school make in a month. You select 10 freshmen, 10 sophomores, 10 juniors, and 10 seniors to ask, a. random b. systematic c. stratified Would the answer be systematic

Sociology Research Methods
You plan to conduct a study with a total population of 387 individuals comprised of 200 freshmen/sophomores and 187 juniors/seniors. You wish to be able to describe the characteristics of both the Freshmen/Sophomore and the Junior/Senior in the sample as

Math
While I was teaching my students I stumbled on that question because I have a serious headache. I need help because I am starting to grade papers. Fiveeighths of the marching band members are seniors and 1/5 of the marching band are juniors. What fraction

PreCalculus
A small high school has 30 seniors, 20 juniors, and 10 sophomores. If 3 students are chosen from each class to be on a school board, how many different board can be selected? ____________________________________________________________ How would I go about

Math
Professor Sousa has 83 students in her anthropology lecture class. 42 of the students are sophomores and the others are juniors. What fraction of the class is sophomores?

geometry
the ratio of juniors to seniors is 9 to 8, if there are 51 juniors and seniors total, which percent of students are seniors? how do i figure this out?!

math
Your math class has 27 students. There are 12 seniors and the rest are juniors. What is the seniortoratio?

MATH
a total of 50 juniors and seniors were given a mathematics test.the 35 juniors attained an average score of 80 while the 15 seniors attained an average of 70.what was the averagescore for all 50 students who took the test? please explain if you can

Math
The average debt for juniors exceeds the debt for sophomores by $ 458$458, and the average debt for seniors exceeds the debt for sophomores by $1165. The combined debt for a sophomore, a junior, and a senior is $6543. Determine the average debt

Math
From a pool of six juniors and eight seniors three co captains will be chosen for the football team. How many different combinations are possible if one junior and two seniors are chosen?

math
a university surveys a randomly selected group of 250 freshmen. In the group, 20 of the freshmen were lefthanded. If there are 8,000 in the freshman class, what is the best prediction fo the number of lefthanded freshmen students? THANK YOU!

MATH
The work crew for the talent show at the local high school includes these members: 2 freshmen,4sophomores,8juniors,6 seniors.If the sponsor randomly chooses 1 member of the work crew to announce the act & 1 member to control the lighting, what is the

PreCalculuscheck answers
How many ways can 5 students be chosen from a group of 4 juniors and 6 seniors to be on the prom committee if exactly 3 students must be seniors? Answer: 5400 Find the probability of getting a sum of 5 on the first toss of two number cubes and a sum of 6

Probability
If 5 juniors and 4 seniors apply for a job at a school which has 2 openings, what is the probability that 1 junior and 1 senior will be randomly chosen for the job.

math
A room contains 80 sophomores of which 39 are males and 41 are females. There are also 69 juniors of which 36 are males and 33 are females. You pick 3 students at random. What is the probability that all 3 are males?

Physics
All freshmen at Roseville High School are required to play exactly one sport. The table below shows all the available sports and the number of the freshmen that signed up for each one. What percent of the freshman class signed up for either baseball or

Statistics
At a certain university, 50% of all entering freshmen planned to major in a STEM (science, technology, engineering, mathematics) discipline. A sample of 36 freshmen is selected. What is the probability that the proportion of freshmen in the sample is

Math 100p
78 students 10 of them are freshmen what fraction of the class are freshman

statistics
Conduct a chi square analysis to determine whether sex and year in college are related. I have tried to submit the data but I can't seem to make the submission work. For my data I used 20 males and 20 females. and for the year in college I have 10

Geography
need help predicting what should be done to prepare each of our two countries for education for young people, Infant care for young mothers, Home construction for growing families, and Medical care for seniors. Age group for each: 019 25.90, 2059 51.70

ENVIRO SCIENCE
1.Between 1950 and 2004, the world population increased exponentially from 2.5 billion to 6.4 billion, what is the percent change? 2.Calculate the percent decrease if there are 620 incoming freshmen and 500 graduated seniors? percent change: (amount

English
When referring to an entire class body, such as 500 students, is it correct to say freshmen or freshman?

math
IF 2/7 OF THE 2905 STUDENTS ARE FRESHMEN,AND IF 30% OF THE FRESHMEN PLAY MUSICAL INSTRUMENT,HOW MANY FRESHMEN STUDENTS PLAY MUSICAL INSTRUMENTS?

Algebra
I do not understand this homework at all. Any help or elaboration would be greatly appreciated. Thanks. 100 juniors at Southwest High took the SAT test. The scores were distributed normally with a mean of 22 and a standard deviation of 3. Label the mean

algebra
I am confused about this one. It is about football. "In a football game the ball was advanced 5 yards from the Juniors' 25yard line towards the Seniors' goal, then 6 yards then 8 yards back, 13 yards forward, 5 yards back, and then 11 yards forward. What

math
several freshmen tried out for the school track team. after round 1, 1/2 of the freshmen were eliminated. After round 2, 1/3 of those remaining were eliminated. After round 3, 1/4 of those remaining were eliminated. After round 4, 1/5 of those remaining

math
8. Of the 180 students who took part in the Race for Hunger, about 5/8 were sophomores. Of the sophomores, 40% were girls. How many sophomore girls took part in the race? A.35 girls B.125 girls C.45 girls D.72 girls please explain and show work

Math Word Problems
Hi, I am having some trouble with some problems, can you please help. thanxs!!! 1. A car rental agency charges $250 per week plus $0.25 per mile to rent a car. How many miles can you travel in one week for $300? Would the equation look like: 300= 250x +

math
There are are 20% more girls than boys in the senior class.What percentage of the seniors are girls?

Math
There are one thousdand students in Central High School. Three hundred twentyeight of the students are seniors. Write the decimal that shows what part of the student body is in the senior class.

statics
you select a name at random from a hat that contains 33 freshmen,34 sophomores, 30 juniors, and 28 seniors. what is the probability that the name is a seniors?

Math
Given the situation described, identify the type of sampling involved. Students at Local U are classified according to the progress toward their degree program as freshmen, sophomores, juniors, seniors and nonmatriculating, then random samples from each

Math
Given the situation described, identify the type of sampling involved. Students at Local U are classified according to the progress toward their degree program as freshmen, sophomores, juniors, seniors and nonmatriculating, then random samples from each

Math
Claudia is arranging seating for her sorority's fall banquet. She has to sit 7 seniors, 5 juniors, 9 sophomores and 3 freshmen at the end banquet table. What is the probability members of the same class will all sit together? 7!x5!x9!x3!= 1.317x10^12 Am I

Math
Claudia is arranging seating for her sorority's fall banquet. he has to sit 7 seniors, 5 juniors, 9 sophomores and 3 freshmen at the head banquet table. if members of the same class must sit together, in how ways can she do this? 2x7!7!x 2x5!5! x2x9!9! x

Math
There are 30 seniors, 15 juniors, 12 freshman, and 10 sophomores in the club. When one student is picked randomly, what is the probability that a sophomore is not chosen? 57/67?

math
Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The total is 2158, what is the amount of each grade? So far, I got 35:32:224/9 for Freshman:Sophmore:Seniors I don't know if I'm correct, or what I'm doing. Can you please give me help

math
Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The total is 2158, what is the amount of each grade? So far, I got 35:32:224/9 for Freshman:Sophmore:Seniors I don't know if I'm correct, or what I'm doing. Can you please give me help

math
The number of Sophomores who eat lunch in the caeteria is about threefouths the number of Freshmen. If there are 60 more Freshemen than Sophomores, how may Sophomores eat lunch in the caafeteria?

mathematics
A total of 50 seniors and juniora wwere give amath tesr.the 35 juniors got an average of 80 and 15 seniors got 70.what was average score of all 50 students

college math
The number of seniors at Freedom High School was 421 in 2002. If the number of seniors increases at a rate 1.7% per year, how many seniors will be in the class of 2014?

com 205
What kind of statement is this. All Seniors pick on Freshmen.

math (check last answers) plz
Last questions, thanks for everything There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table. If a guest randomly picks a single plate, what is the probability that he gets tomato or

Math
Last questions, thanks for everything There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table. If a guest randomly picks a single plate, what is the probability that he gets tomato or

Statistics
A class has 50 students. 13 are juniors, 20 are psych majors, and 24 are neither psych majors nor juniors. How many psych majors are juniors?

Physics
A class has 50 students. 13 are juniors, 20 are psych majors, and 24 are neither psych majors nor juniors. How many psych majors are juniors?

statistics
(a)Comparison of GPA for randomly chosen college juniors and seniors: xbar= 3.05, s1 = .20, n1 = 15, xbar2= 3.25, s2 = .30, n2 = 15, á = .025, lefttailed test. calculate d.f. ____________ Standard error ____________ tcalculated ____________ pvalue

math
Fifteen percent of the seniors voted for Joe. If 289 seniors voted for tehother candidates, how many seniors voted in the election? Let the total number voting be N. 0.85 N = 289 Solve for N

question
i need some advice im a freshmen in hghschool and i have one honor class this semester and the 1st term i got a 80.6 and im struggling more is it better to be in it or just take regular and have an a over a b are their any benefits of it

math
several freshmen tried out for the school track team. after round 1, 1/2 of the freshmen were eliminated. After round 2, 1/3 of those remaining were eliminated. After round 3, 1/4 of those remaining were eliminated. After round 4, 1/5 of those remaining

College Algebra
The winning candidate for president of the freshman class received 2988 votes. If that was 150 more than half the votes cast, how many freshmen voted?