There are 90 students in a speech contest. Yesterday 1/3 of them gave their speeches. Today 3/5 of the remaining students gave their speeches. How many students still haven't given their speeches?

Q: A researcher wishes her patients to try a new medicine for depression. How many different ways can…

A: Given: There are 47 patients. We use combination to find how many ways researcher can select 5…

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: To estimate the number of bass in a lake, a biologist catches and tags 24 bass. Several weeks later,…

A: The objective is to determine the number of bass in the lake. Let the number of bass in the lake is…

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: 9% of Ivy tech students are dual credit students. If there are 13,936 dual credit students, how many…

A:

Q: There are 275 students who applied for a scholarship. If there are 107 females and 86 coming from…

A: There are 275 students who applied for a scholarship. If there are 107 females and 86 coming from…

Q: In a mathematics class, eighteen students received an A on the third test, which is 150% of the…

A:

Q: A high school wants to buy six computers for its laboratory from a local supplier. The supplier has…

A: Introduction: If r distinct items are to be chosen from n items without replacement so that the…

Q: Que. How many 5-man squads could be chosen from a company of 20 men?

A: No. of ways of choosing 5 - man squads out of 20 men = C520…

Q: City high school had a student reduction and lost 1/14 of its students. If 286 of its student were…

A:

Q: 5 Brady went to a big parade and saw 42 different marching bands. If each band had an average of(120…

A: Brady went to a big parade and saw 12 different marching bands. Each band had an average of 120…

Q: Mr Hudson, the principal at Hoover High School, counted 31 seniors absent on Senior Skip Day. if…

A: Topic:- persentage

Q: Four married couples have bought 8 seats in the same row for a concert. In how many different ways…

A: The number of ways to arrange r objects selected from n distinct objects is given by permutation.…

Q: For a particular​ event, 708 tickets were sold for a total of ​$4464. If students paid ​$5 per…

A:

Q: If 11 students from a 1st-grade class are lining up to enter the cafeteria line for lunch, how many…

A:

Q: If there were only 9 Runners on the team last year how many females were there on the team this year

A:

Q: 60% of Ms. Howard's class ordered a hot lunch from the cafeteria. If 15 students ordered a hot…

A: Que Ans: Given          60% of Ms. Howards class ordered hot lunch,         15 students ordered hot…

Q: How many ways can 4 people sit around a circular table?

A: In a circular arrangement first fix the first person’s position, which can be performed in only one…

Q: How many ways can 4 people sit in a row of 7 chairs? The number of ways 4 people can sit in a row of…

A: Given: number of chair (n)=7 number of people (x)=4

Q: there are six boys to every five girls in an introductory Chinese course if there are 407 students…

A: there are six boys to every five girls in an introductory Chinese course if there are 407 students…

Q: In a mathematics class, 21 students received an a on the third test, which is 175% of the students…

A:

Q: For a particular event, 673 tickets were sold for a total of $5103. If students paid $6 per ticket…

A:

Q: A person going to a party was asked to bring 2 different bags of chips. Going to the store, she…

A: Given: Total number of bags of chips is 10.

Q: if 1 cup gives 20 servings, and 1/2 cup gives 40 servings, how do i figure out how many servings 3/4…

A:

Q: How many different ways are there for the 10 people to stand in line to buy movie tickets?

A: How many different ways are there for the 10 people to stand in line to buy movie tickets?

Q: A person going to a party was asked to bring 4 different bags of chips. Going to the store, she…

A: Combinations: The number of combinations of r items selected from n items is, nr=n!n-r!r!

Q: A concert manager counted 600 ticket receipts the day after a concert. The price for a student…

A: Given that: Total number of tickets counted = 600Total cash recieved = $9637.50Price of ticket for…

Q: A local sporting goods store is celebrating its grand opening by giving a free t-shirt to every 5th…

A:

Q: or a particular event, 697 tickets were sold for a total of $5250. If students paid $6 per ticket…

A:

Q: How many choices are there for a person to check out 4 CDs from a library that has 20 CDs of his…

A: Given : n = 20 x = 4

Q: 4. Mrs. Jones' class has 27 students. To the nearest ten, how many students are in Mrs. Jones'…

A: See attached file for a step by step explanation.

Q: The number of people applying for free financial aid has gone up in the past decade by 6.74%. If the…

A: Given Data: Change in percentage=0.0674   Number of people that used to apply=9720000

Q: At a football match between North Storm and West Stanford there were 71,167 spectators. If 41,109…

A:

Q: How many matches are played in a badminton tournament of 27 players?

A: Sol

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

A:

Q: There are 56 students in a speech contest. Yesterday 1/4 of them gave their speeches. Today 2/7 of…

A:

Q: If 120 more people showed up to Shakespeare in the Park than are here now, there would be 9 times as…

A:

Q: 4 were on time and 2 were late, how many of the next 12 trains would you expect to be on time?

A: The probability that the train would be on time is, Pon time=46=23 The probability that the train…

Q: There are 377 students who are enrolled in an introductory geology course. If there are eight boys…

A:

Q: n a recent year, 39% of all college students were enrolled part time. if 8.9 million college…

A: Given that 39% of all the college students enrolled for part time in a particular year. The number…

Q: Solve by the method of your choice: How many different ways can a director select 4 actors from a…

A: Given that : The number of actors in the group = 20

Q: How many handshakes are nossible with 30 guests in a party?

A:

Q: How many ways can you pick five students for the student council when there are twelve people…

A: The mathematical formulation which can be used to determine the total number of ways in which r…

Q: How many students participated in debate team?

A: It is given that Let, A represents number of students participated in maths club B represents number…

Q: How many ways are there to select 2 people from a group of 7 to serve on a committee? What kind of…

A: We have given there is group of 7 and we have to select 2 people from this group to serve on a…

Q: Starting from Washington, DC, how many ways can you visit 5 of the 50 state capitals and return to…

A: We need to find no of ways we choose 5 states from 50 countries.

Q: When the ballots in box 1 were counted, there were 5,180. In box 2 there were 4,848, and in box 3…

A: .

Q: School A had 10% more students enrolled than school B. Due to some redistricting 12 students from…

A: Given, school A had 10% more students enrolled than school B. Due to some redistricting 12 students…

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.