A fish pond contains 129 tetras, 126 angelfish, 3 cory cats and 172 goldfish. What is the probabability of picking a tetra?

Q: Carla got coins from her pocket which accidentally rolled on the ground. If there were 4 possible…

A: Given that,  coins from Carla pocket which accidentally rolled on the ground and there are 4…

Q: If there are 57 cards in a deck and 12 are dealt to each student, how many 12 card possibilities are…

A: Combination Rule:The arrangement of r objects from n different objects is given by:

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: When taking a 20 question multiple choice test, where each question has 3 possible answers, it would…

A: We have to find that event is usual or unusual.....

Q: There are 5 defective light bulbs in a bin containing 60 light bulbs. How many ways can you select…

A:

Q: You are taking a quiz that has 8 multiple-choice questions. If each question has 3 possible answers,…

A: Given: Test has 8 multiple choice questions. Each question has 3 possible answers. Objective of the…

Q: A multiple-choice test has 7 questions, with 4 possible answers for each question. If a student were…

A: Given: Number of questions = 7 Number of options available for each question = 4

Q: When taking a 5 question multiple choice test, where each question has 4 possible answers, it would…

A: Given that, Number of questions in multiple choice test n=5 Probability of getting correct answer…

Q: In a best-of-seven series in the Philippines Basketball Association (PBA) tournament, the team who…

A:

Q: A quiz consists of 6 multiple choice questions where each question has four choices. In how many…

A: Each question has 4 choices hence the answer can be chosen in 4 ways out of the given 4 options.…

Q: If a multiple-choice test consists of 5 questions, each with 4 possible answers of which only 1 is…

A:

Q: From a standard​ 52-card deck, how many 7​-card hands consist of 5 clubs and 2 diamonds​?

A: There are total 13 clubs and 13 diamonds.  We can pick 5 clubs from 13 clubs in 13C5 ways. We can…

Q: In the Philippine Basketball Association (PBA) championship game is decided on a best of seven (7)…

A: The championship is best of 7 games. The team can win if they win at least 4 matches The team can…

Q: A student must answer 3 out of 5 essay questions on a test. In how many different ways can the…

A: A student must answer 3 out of 5 essay questions on a test. In how many different ways can the…

Q: A multiple-choice test consists of 15 questions, each permitting a choice of 5 alternatives. In how…

A: Given that  Multiple choice test consists number of questions = 15 Each question has 5 alternatives.…

Q: You are taking a quiz that has 11 multiple-choice questions. If each question has 4 possible…

A: Total multiple choice questions = 11 Each question has 4 possible answers

Q: a licensure examinations, an examinee may select 7 problems from a set of 10 questions. In how many…

A:

Q: The university of Montana ski team has 8 entrants in a men’s downhill ski event. The coach would…

A: Permutations: The number of permutations of r items selected from n items is, Prn=n!n-r! The…

Q: Anne and her siblings are planning to throw a surprise party for their parents' 50th wedding…

A: To decide whether the given statement is permutation or combination.

Q: When taking a 18 question multiple choice test, where each question has 4 possible answers, it would…

A: Given: Total number question = 18 The number of possible answers = 4.

Q: When taking a 10 question multiple choice test, where each question has 5 possible answers, it would…

A: Given data, n = 10 p = 1/5 = 0.2

Q: A survey of 500 high school students was taken to determine their favorite chocolate candy. Of the…

A: we have to find given  probability

Q: At an appliance store’s grand-opening sale, 152 customers bought a washer or a dryer. Looking at the…

A: Here we have to find the number of customers who bought only washer. The solution is following .

Q: Charmaine asked 8 students how many courses they have taking so far at her college. Here is the list…

A: Solution: The given data is 13, 20, 8, 17, 22, 4, 15 and 18.

Q: When taking a 17 question multiple choice test, where each question has 3 possible answers, it would…

A: Note:Since no other information is provided, we have assumed that it will be unusual, if the…

Q: From a class with 45 students, 9 students will be chosen to join the Math Fair. In how many ways can…

A:

Q: avi got 18 out of 20 and Karla got 85% on the same test which one is greate

A: To determine which of the following is greater. Ravi got 18 out of 20 Karla got 85%

Q: On a 10 question multiple-choice test, three answers are A. three are B. two answers are C. and two…

A:

Q: In a society where 60% of the citizens identify as liberal and 40% of the citizens identify as…

A: Here we want to know given statement is true or not.

Q: The number of ways can select a cricket team of 11 players out of 14 players is_

A:

Q: 2 Heather has a bag of 15 red, 11 orange, 9 yellow, 12 green, 6 blue and 11 purple markers. How many…

A: There are total (15+11+9+12+6+11)=64 markers.  Among them 15 are red. So the probability of picking…

Q: When taking a 8 question multiple choice test, where each question has 4 possible answers, it would…

A: When taking a 8 question multiple choice test, each question has 4 possible answers. Mean and…

Q: In one of the Florida lotter games, one has to match six numbers out of 49 numbers to win. How many…

A: In order to win the lottery, 6 out of the 49 numbers has to match. So if we calculate the total…

Q: A box contains 7 different marbles. In how many ways can you select 5 marbles for you to play with…

A: A box contains 7 different marbles. in how many ways can you select 5 marbles for you to play with…

Q: A quiz consists of 6 multiple choice questions where each question has four choices. In how many…

A: If there are n different items and each item have m choices, then the number of permutations is…

Q: At a restaurant 52 people were asked in a survey if they eat meat, fish, or both. Of those adults 10…

A: We can make a Venn diagram and clearly see from there.

Q: At a lottery, 100 tickets were sold and three prizes are to be given. How many possible outcomes are…

A:

Q: In a standard deck of 52 cards, how many cards are either aces or hearts?

A: There is a standard deck of 52 cards. To determine how many cards are either aces or hearts.

Q: In a math 105 class of 32 students, a survey showed that 20 students used the . least once, 10 used…

A:

Q: When taking a 8 question multiple choice test, where each question has 4 possible answers, it would…

A: Mean and standard deviation:The mean and standard deviations are calculated as follows:

Q: Eight students entered the testing room that had 20 chairs evenly arranged on each side. If two of…

A: Let us assume there are three ladies A, B and C sitting beside each other. The different ways in…

Q: ou are taking a quiz that has 9 multiple-choice questions. If each question has 6 possible answers,…

A: You are taking a quiz that has 9 multiple-choice questions. Each question has 6 possible answers…

Q: A committee is going to select 30 students from a pool of 1000 to receive scholarships. How may ways…

A: It is given that a committee is going to select 30 students from a pool of 1000 to receive…

Q: President Rodrigo duterte together with his 4 cabinet members is holding a press conference with 6…

A: The number of member of cabinet are 4. The number of member of media reporter are 6.

Q: An ice cream parlor has six flavors of ice cream. Kristen wants to buy two flavors of ice cream. If…

A:

Q: A public health inspector wishes to inspect four restaurants by the end of the week. She has a list…

A: Given: Number of high-risk premises restaurants is 26, that is, x1=26. Number of medium-risk…

Q: 3. Pranshu shared a funny Tik Tok with three of his friends. His three friends shared it with three…

A: Tree Diagram A tree diagram is very useful to represent multi-stage events for displaying the…

Q: How many 2 card hands are possible with a 13-card deck? The number of hands is

A: Number of card hands (r) = 2 The no.of cards in a deck (n) = 13 The formula for calculating the…

Q: If you select one card at random from a standard deck of 52 cards what is the possibility that the…

A:

Q: There are 3 people on the soccer team committee.  Members are chosen randomly to be the president,…

A: Introduction: According to the permutation rule, if r distinct items are to be chosen from n items…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.