Your town does a study and finds that 3 in 5 dogs have licenses. If there are 250 dogs in town, how many won't have licenses.

Q: low-birth-weight babies graduate from high school by age 20. If 180 ​very-low-birth-weight babies…

A: The expected value can ve calculated as, E(x) =np

Q: Five of a sample of 100 computers will be selected and tested How many ways are there to make this…

A: We will choose a group of 5 computers from 100 computers.

Q: If a study was counting cells on a petri dish and listed an of n=25, what would the df be for the…

A:

Q: Amarble is selected at random from a jar containing 2 red marbles, 3 yellow marbles, and 4 green…

A: GivenA jar containsNo.of red marbles=2No.of yellow marbles = 3No.of green marbles = 4Total no.of…

Q: How likely is it for a vehicle to have an accident history if it was known to be a car or a bus?

A: Here complete table

Q: Wore a bicycle helmet (among students who had ridden a bieyele during the previous 12 months)?…

A: Solution-: We have, The given frequencies table are observed frequencies    12th-Grade Boys 12th-…

Q: n 1995 a magazine reported the results of a poll of adult Americans in which it asked, "Have you…

A:

Q: A district in the Ashanti region town has 102 towns and villages. If you interviewed everyone living…

A: Given that there are 102 towns and villages.  We consider a population when we want each and every…

Q: a 2011 study, Wilkinson, Sebanz, Mandi, and Huber observed the reactions of 7 tortoises when exposed…

A: Given that in a 2011 study, Wilkinson, Sebanz, Mandi, and Huber observed the reactions of 7…

Q: Suppose that seven hundred twenty-five residents were randomly selected and asked whether they have…

A: The objective is to find out the probability that the resident is a male or has covid vaccine…

Q: 40. Of 1,000 people consulted, 811 liked chocolates, 752 liked toffees and 418 nd

A: Given problem Given that   Method 1 :

Q: 3. Three grade 10 students were asked to choose their strand before enrolling in senior high school.…

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Q: If only 15% of people asked to mail in a survey respond, this is an example of

A: Given that  Only 15% of people asked to mail in a survey respond.  We know that  Response bias :…

Q: ) A person has type A blood, given that the person is Rh -.

A:

Q: Who is the king of late night TV? An Internet survey estimates that, when given a choice between…

A:

Q: A survey of 64 families yields the following data for the number of children per family. 1 1 2 2 3 4…

A:

Q: An epidemiological study projects that 25% of a population in certain area are expected to get sick…

A: This is a probelm of percentage. Lets solve this using the concept of the same.

Q: It is estimated that 15% of teens own iphone. In the MDM4U class there are 25 teens who own…

A:

Q: A manufacturer of automobile tires reported that among a shipment of 600 sent to a local…

A: Given that 20 are blemished out of 600. So the probability of blemished is= 20/600= 1/30

Q: A pollster randomly selected 4 of 10 available people. How many different groups of 4 are possible?

A: Given,   A pollster randomly selected 4 of 10 available people.   The objective is to find how many…

Q: Suppose a survey is taken of 300 high school seniors out of a total of 1,000 seniors. This group is…

A: the group is probably a

Q: Sony: 10.0% Apple: 30.0% No kia: 15.0% Huawei: 25.0% Samsung: 20.0% | Apple I Samsung INokia I Sony…

A: GIVEN

Q: A taste-testing survey of Zing Farms showed that 2/3 of the people surveyed preferred the taste of…

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Q: If six out of ten individuals in a population carry a gene for a defective enzyme, how many…

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Q: In a survey of 500 investors conducted by NPC Data Analytics Company, it was reported that 270…

A: The set A∪B contains all the elements that are present either in set A or in set B. The set A∩B…

Q: Wore a bicycle helmet (among students who had ridden a bieyele during the previous 12 months)?…

A:

Q: 1. What is the frequency of the AA genotype in this population? 2. What is the frequency of Aa…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: - In a survey of 500 students of a college, it liked watching hockey and 62% liked watc

A: Given, in a survey of 500 students of a college, it was found that 49% liked watching football, 53%…

Q: In how many ways can an examinee check off one answer to each question and get all the answers…

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Q: Following the model above, if 128 different people each observe one randomly chosen groups of four…

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Q: In a study of children, a total of 1,548 children were examined. Of these, 1,017 had rickets. Of the…

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Q: In a survey of 800 investors conducted by DBB Data Analytics Company, it was reported that 400…

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Q: A biology student wanted to determine if using fertilizer would promote plant growth. One hundred…

A: If we use he random assignment of the fertilizer, we have evenly distributed of two fertilizer…

Q: In the Aloha state, you are very unlikely to be murdered! However, it is considerably more likely…

A: Given that, The following numbers represent the crime rates per 100,000 population in Hawaii:…

Q: In a sample of 310 people, 186 completed only high school, 24 completed only some college, 93…

A: Given data A sample of 310 people is given. 186 completed only high school. 24 completed only some…

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 300…

A: Part a:          x = 300         n = 450         p' = 300/450 = 0.6667   Part b:  X is the number of…

Q: Only 45% of registered voters voted in the last election. Will voter participation be even lower for…

A: Given Only 45% of registered voters voted in the last election. Will voter participation be even…

Q: For the purposes of a marketing research, a survey of 100 women is conducted in a town, The results…

A: The complement of set A is A' and it is defined using the formula, A'=E-A, where, E is the universal…

Q: In the Aloha State, you are very unlikely to be murdered! However, it is considerably more likely…

A:

Q: On a youth soccer team 3 out of 12 team members have played in previous years. Based on this…

A: The formula of mean is,

Q: We are interested in determining if absences from a class affect your overall class grade. The…

A: Simple linear regression model: A simple linear regression model is given as y^ = b0 + bx + e…

Q: A survey showed that 23% of college students read internet news on a regular basis and that 82% of…

A: Given that  A survey showed that  College students read internet news on regular basis is 23% = P(I)…

Q: the follov

A: we have to name the given angles in two different ways.

Q: A machine puts out 16 imprefect articles in a sample of 500. After the machine is repaired, puts out…

A: If two samples are drawn from different populations, we may be interested in finding out whether the…

Q: A population of female mosquitoes has been divided into three age groups: 0-9 day olds 10-19 day…

A:

Q: The 2017 Chapman University Survey of American Fears asked a random sample of 1207 American adults…

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Q: ased on the total passenger traffic, the airports in the following list are the 20 busiest airports…

A: Refer the data  given in the tables and spot the highest and the lowest number of passengers in the…

Q: A U.S. Census finds that 58.5% of women are employed. A county commissioner thinks that a larger…

A: From the provided information, Sample size (n) = 1000 From which 622 are employed, so sample…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.