A market study produces the following results: * 80% of respondents drink coffee or tea or both * 60% of respondents drink coffee (the may also drink tea) * 30% of respondents drink both coffee and tea. What is the percentage of respondents drinking tea?

Q: In 1950​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: Given data,   x1= 396                                                  x2= 319 n1=1100…

Q: In an attempt to document the percentage of teenagers in the United States who play video games for…

A: The process of drawing conclusions about the population parameters by using the sample statistics,…

Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Solution: Given information: n1= 1100 Sample size of adults in 1945 survey  x1= 352 adults indicates…

Q: A high school student is writing a report on which social media site, Facebook or Instagram, is…

A: Solution of this question is

Q: manipulated

A: Here it is asked to identify the type of variable.

Q: 3) When you are trying to discover whether there is a relationship between two categorical…

A: To find the relationship between two categorical variables is difficult when we analyze the counts…

Q: In a study of teen cell phone use, 117 high school students were observed as they drove out of their…

A: Solution Given out of 117 students drive their vehicles to school and 46 were taking on their…

Q: (b) Has the proportion of adults who totally abstain from alcohol changed? Use the a = 0.10 level of…

A: Here it is given that , of the 1100 adults surveyed, 352 indicated that they were total abstainer.…

Q: Does this statement make sense or not? our study measured the birth weights and incidents of…

A: Here we want to Know that the given statement make sense or not.

Q: A research report from an independent-measures study states that there are significant differences…

A: Determine the number of treatment conditions that were compared in the study. The number of…

Q: Suppose I want to know if violent video games cause young people to behave aggressively. Answer what…

A: Given that we want to know if violent video games cause young people to behave aggressively. We have…

Q: The results of a nation wide Gallup poll concerning a person‘s race and their        opinion on the…

A: Giventhe opinion on the death penalty are given below The number of the people opposed to death…

Q: According the April 12, 2017 Pew Research survey, 58% of Americans approve of U.S. missile strikes…

A: Given that  58% of Americans approve of U.S. missile strikes in Syria

Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: In 1942 ​, an organization surveyed 1100   adults and​ asked, "Are you a total abstainer​ from, or…

A: The proportion of considered subjects, on which we are interested from a sample can be termed as…

Q: Based on a sample of 80 men, 35% owned cats Based on a sample of 40 women, 50% owned cats The test…

A:

Q: According to the following two-way table, what percent of people in the sample taken naps?   male…

A: Given, The contingency table,   Male Female Total nap 25 30 55 does not nap 35 10 45 Total…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: given information: let us consider x : potential voters prefers the democratic candidate.…

Q: The Consumer Reports Restaurant Customer Satisfaction Survey is based upon 148,599 visits to…

A: Let μ1,μ2,μ3 denotes the mean meal price for the three types of restaurants. Since the means of more…

Q: The following table shows the percentage of U.S. college freshmen in the given year who believed…

A: Given data X 1996 2000 2004 2008 2012 Y 56.7 53.4 53.4 58.9 61.2 Using the extrapolation,…

Q: A study of US residents is conducted to assess the relationship between gender and if they have…

A: Test is that whether there is relationship between gender and if they have cardiomyopathy.

Q: The results of a nation wide Gallup poll concerning a person‘s race and their        opinion on the…

A: The summarized table is, (c) The percentage of the people in this study were Hispanic and opposed…

Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Let, X1= number of abstainer in the previous test n1= total sample size of the past test p1^ =…

Q: In how many ways can a statistician select a sample of 15 people from a population of 90 people?

A: Given,A statistician select a sample of 15 people from a population of 90 people.

Q: A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

A: Given,            a Gallup pool of 1001 Americans age 18 and over was conducted.     Again we know-…

Q: In order manufacturer is claiming that its new 2021 SUV model will have better gas mileage than the…

A: (a) The null and alternative hypothesis is, H0:u=30H1:u>30              (right tailed/one tailed)…

Q: In 1944​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: We habe to find given proportion.

Q: Suppose we examined medical records of 500 individuals admitted to the hospital, and we…

A: Given that, medical records of 500 individuals admitted to the hospital were examined, and…

Q: (a) What proportion of 18- to 34-year-old respondents are more likely to buy when made in their…

A: In a poll, a random sample of 2163 adults (aged 18 and over) was asked, "When you see an ad…

Q: In 1941​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: In 1941​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

Q: le of teenage drivers living in Dover City for H0: p = 0.50 and Ha: p < 0.50, where p is the…

A: Given: Hypothesis: H0 : p=0.50Ha : p&gt;0.50 Sample size, n = 150 Level of significance, α=0.05 Part…

Q: A group of 200 college students who took math last term were interviewed. They were asked whether…

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

Q: A survey asked 16 boys and 14 girls about their shirt color. There were 8 boys with blue shirts, 6…

A:

Q: The survey on student attitude toward e-books described in Exercise 3.5 was conducted in 2011. A…

A: Bar chart is an ideal way of visually representing categorical data.

Q: A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether…

A: Introduction:The sample proportion is a good estimator of the population proportion, if the sample…

Q: (6) A student surveys some students on campus in the evening and finds that 16 out of 20 of the…

A: A bias in the survey may be defined as the intentional or unintentional tendency to over or…

Q: when you have means from two different samples, it is best to conduct a what test?

A: When there is mean from two different samples, two types of test can be conduced:

Q: Most people believe that smoking is unhealthy. The table given is the result of a study of randomly…

A: we have to find expected frequency ( i.e. Observed count )   Formula :  Eij = Ri×CjN Where ,  Ri…

Q: In 1946, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Let p1 be the proportion of adults took the survey in 1946 and p2 be the proportion of adults took…

Q: Example 3. A survey company investigated 800 car owners and found, 65- owned Maruti car and 300…

A:

Q: .At a local ice-cream store, 210 people were surveyed on whether they preferred eating ice cream…

A: The total number of people is n = 210.

Q: Example 17: In a sample of 1000 citizens of India, 540 are wheat eaters and the rest are rice…

A: In order to test the claim that both rice and wheat are equally popular, determine whether the…

Q: A survey of 40 students at a local college asks, "Where do you buy the majority of your books?" The…

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

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: Which of the seven attitudes was (were) statistically significant at the strongest level? Provide a…

A: Decision Rule: If p-value ≤ α, then reject the null hypothesis(statistically significant). Let us…

Q: A random sample of 100 business majors was asked a series of demographic questions including major,…

A: Cluster bar charts: When we need to describe the relationship between categorical or ordinal…

Q: A recent poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

A: GIVEN age =18 the respondents= 80%=0.8

Q: In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Given that  Sample sizes n1=1100 , n2=1100 Favorable cases x1=440 , x2=418

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.