Researchers estimated that a wooded area is home to 350 blue jays. In their second sample they counted 4 marked birds out of 40. How many birds were marked in the first sample, assuming all birds were marked? * 35 45 55 25

Q: How many different choices of 5 toppings are there

A: Given Data: The total number of toppings is: n = 6 Required choice of toppings is: r = 5   This…

Q: 100 people were surveyed and asked if they own a smart phone. A person is selected at random from…

A: Female Male Total owns a smart phone 46 24 70 Does not owns smart phone 18 12 30 Total 64…

Q: The numbers 1, 2, 3 and 4 are written separately on four slips of panes The slips are put in a box…

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Q: Yellowstone Middle School has 900 students. Teresa surveys a random sample of 24 students and finds…

A: Yellowstone Middle School has 900 students. Teresa surveys a random sample of 24 students and finds…

Q: A survey of 1210 parents of 13-to 17-year-olds found that 658 of the 1210 parents have checked their…

A: The population is the collection of responses of parents of 13 to 17 years olds.

Q: survey 100 students, 81 use Facebook, 36 use google, and 20 use both. what percentage uses what

A: Let represent the set of students who use Facebook, represent the set of students who use Google+,…

Q: In a survey of 81 pet owners, 26 said they own a dog, and 37 said they own a cat. 13 said they own…

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Q: Four members from a 14 members committee are to be randomly selected to serve as a Chair, a…

A: The number of members is 14.

Q: An 8-sided die is marked with the numbers 1 through 8. An experiment consists of rolling the die,…

A: An 8-sided die is marked with the numbers 1 through 8.

Q: Start with a deck of 64 cards—16 cards in 4 suits. Ask a person to think of card. Your task is to…

A: The amount of information uncertainty in the single card,  Hs= log2N  Here total cards are N= 64 Hs=…

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Q: 155 students were surveyed about their social media usage. 72 students said they post on Instagram…

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Q: 80% of a class of 40 children passed a math test. A. How many children passed in maths? B. What…

A: Given: Total number of children, N=40 Percentage of passed students=80% a) To calculate the number…

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A: We have to find mean  of correct answerfor given data ...

Q: In a survey of 3229 adults aged 57 through 85 years, it was found that 87.5% of them used at least…

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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 survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: Write the Sample space, outcome or event of the ff: 4. Arranging the possible children of a couple…

A: Given that  A couple with 3 children  Find sample space and events second child is girl

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A: Given, a paper bag contains 3 green, 4 brown and 5 yellow beads. so we have a total of 12 beads…

Q: Of the 328 patients that completed the survey last year, 211 of them claimed to be returning…

A: Given: 328 patients completed the survey 211 patients returning

Q: In Africa 3out of every 10 people attend church.if 2000 people in Africa were chosen at random how…

A: Expected value can be obtained using this formula:Let Expected value = E E= n • pwhere:n = number of…

Q: There are 3 different bikes stored in a warehouse. This warehouse contains 15,000 bikes in total.…

A: The total number of bikes is N = 15000.

Q: The mean of 11 numbers is 30. One of the numbers, 12, is deleted. What is the mean of the remaining…

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Q: In a survey of 3186 adults aged 57 through 85 years, it was found that 85.9% of them used at least…

A: Given :  In a survey 0f 3186 adults aged 57 through 85 years, it was found that 85.9 % of them…

Q: Jay has 14 stat books. In how many different ways can he arrange 4 of them on a bookshelf?

A: Permutation is defined as an arrangement of objects in a definite order. The members or elements of…

Q: The table shows the test results of 6 students in DFS Mathematics. Draw a bar chart for the table.…

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Q: to determine voters' feelings regarding an issue, a candidate asks a sample of people to pick 4…

A: Given:-           The number of 4 different word grouping is possible if the candidate raise a…

Q: A coin is tossed 17 times. In how many outcomes do exactly 11 heads occur?

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Q: in class of 24 srudents, 25% of them failed a text. how many sudens failed the test

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Q: Quality control. An auto parts store receives a shipment of 30 electronic car battery testers, 4 of…

A: Combination only includes number of ways of selection whereas, permutation includes number of ways…

Q: In a survey of 3012 adults aged 57 through 85 years, it was found that 81.2% of them used at…

A: Answer: From the given data, Sample size (n) = 3012 Percentage of adults aged 57 through 85 years in…

Q: A researcher wanted to test eight specific drugs and he had enough animals to test five drugs. How…

A: It is an important part of statistics. It is widely used.

Q: In a survey of 3066 adults aged 57 through 85 years, it was found that 82.3% of them used at least…

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Q: There are 3 different bikes stored in a warehouse.  This warehouse contains 15,000 bikes in total.…

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Q: What is the probability that the person selected is a female?

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Q: In a survey of 96 pet owners, 68 said they own a dog, and 11 said they own a cat. 6 said they own…

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Q: What sampling distribution will you use? binomial O Student's t O uniform

A: Total number (N)  = 1215 Number of ethnic groups(n) = 6 degree of freedom (df) = n-1  =6-1 =5…