A randomly selected sample of 1,000 college students was asked whether they had ever used the drug Ecstasy. Sixteen percent (16% or 0.16) of the 1,000 students surveyed said they had. Which one of the following statements about the number 0.16 is correct? A. It is a sample proportion. B. It is a margin of error. C. It is a randomly chosen number. D. It is a population proportion.

Q: Q12. If 150 households were surveyed out of which 120 households have internet fiber cable, then…

A: Given Data: x=150-120=30 n=150

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: A sample of 50 potential customers was asked to use your new product and the product of the leading…

A: Let n = sample size = 50 X = number of customers who preferred the product in the sample = 30

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

A: We have given that For the survey taken in 1941 n1 = 1100x1 = 374p̂ = x1/n1 = 151/429 = 0.3520 And…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: Bopulation proportion of 1943 adults who were total abstainers and p, represent the population…

A: Solution: Given N1=1100,  X1=429 N2=1100,  X2=374 (α)= 0.05

Q: A sociologist wants to know the proportion of adults with children under the age of 18 that eat…

A:

Q: A Pew Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given that  Total Number of adults about their use of smart watches and fitness trackers n = 4272…

Q: Among 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given X=300 n=1815

Q: a. How many students received a "D"? students E b. If a "C" or better is required to take Statistics…

A: From given data we have : Total Number of students = 200

Q: Suppose you wanted to know the proportion of students who wear glasses on campus and you went ahead…

A: you wanted to know the proportion of students who wear glasses on campus  you went ahead and survey…

Q: 13. A sample of 10 students are weighed and ranked according to their weight. The median weight is…

A: 13. Here a sample of 10 students are weighted and ranked according to their weight. We have to find…

Q: A survey of American households found that 1/4 had a land line, 7/12 had cable, and 1/3 had neither.…

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

Q: When asked what they consider to be the best birthday present, 64% of a random sample of  800 adults…

A: The Margin of Eroor (MOE) = z * √p * (1 - p) / √nWhere: z = 1.96 for a confidence level (α) of 95%,…

Q: A magazine article conducted a survey of 807 people in Phoenix metro area and found that 45% of the…

A: Sample size (n) = 807 Population proportion (p) = 45% = 0.45 And  97% confidence interval is (41%,…

Q: The city of Raleigh has 11,700 registered voters. There are two candidates for city council in an…

A: Consider x denotes voter supports Brown. Here, n = 350 and x = 178.

Q: . A student wants to determine whether people i arming. After a lesson on global warming, she…

A: According to the Bartleby guideline only one question can be solved at one time, post the remaining…

Q: The mode is similar to the median as a measure of central tendency in that

A: Central tendency: The value that is used for describing the full data set using the central position…

Q: The Bata Shoe Museum states that 16% of women wear shoes that are too small for their feet. A…

A: 16% women wear shoes that are too small for their foot. So, proportion of women wear shoes that are…

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: A researcher claims that based on the information obtained, 17% of young people ages 9-19 are obese.…

A: Given : Sample size  of young people ages 9-19 (n) = 200 Let X: No. of young people ages 9-19 obese…

Q: Determine the correct alternative hypothesis. According to the Federal Housing Finance Board, the…

A:

Q: Use the results from a survey of a simple random sample of 1077 adults. Among the 1077 respondents,…

A: Given:n = 1077p̂ = 71% = 0.71p = 13/20a. Actual number of respondents who rated themselves as above…

Q: a. A statistics class is made up of 10 men and 23 women. What percentage of the class is male? b. A…

A:

Q: Suppose you want to choose a sample of 50 students from a school of 400. Explain why the following…

A: Given data suppose you want to choose a sample of 50 students from a school of 400

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: 5. For 2019, the mean fare to fly from Los Angeles to Miami was $250 on Aero Lindvallia. In December…

A:

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: Suppose you want to estimate the percentage of videos on YouTube that are cat videos. It is…

A: For the given A. What is the sample? B. Label each of the following as an observational unit, a…

Q: In a statistical study, the sample is a. The group of people or objects for which conclusions are to…

A: We know that a population is an entire group of objects which we want to study but the size of the…

Q: 12. A lecturer wanted to know the percentage of students who enjoy his lectures. A random sample of…

A: Given : Sample size of student (n) = 20 Let X : No. of students who enjoy lectures of a lecturer…

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: Use the results from a survey of a simple random sample of 1155 adults. Among the 1155 respondents,…

A: Solution

Q: 51. The airline industry defines "no-shows" as passengers who have purchased a ticket but fail to…

A: As per the guidelines we are allowed to solve maximum of 1 question If you need help with other…

Q: A researcher gathered from historical papers that the proportion for the success of an event was…

A:

Q: 2.21 A team of researchers (Singer et al., 2000) used the urvey of Consumer Attitudes to investigate…

A: Solution Step 1 Given A team of researchers  used the Survey of Consumer Attitudes to investigate…

Q: Ask 20 of your classmates about their favorite viand among the choices; ADOBO, SINIGANG and MENUDO.…

A:

Q: Determine whether the given percentage is a statistic or a parameter and why.   In a study of all…

A: It is given that 'In a study of all 1018 students at Guttman, data showed that 10% live in Queens.'

Q: Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The…

A: Answer  Given  Sample size [n] =23 P =33%     =33/100    =0.33

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

A: In 1950, Total adults n1=1100                       x1=374 In recent year…

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.