A website reports that 70% of its users are from outside a certain country. Out of their users from outside the country, 60% of them log on every day. Out of their users from inside the country, 80% of them log on every day. What percent of all users log on every day?

Q: Compute a 90% confidence interval for the proportion of American adults who mostly drink diet soda.…

A: We have number of sample n= 2027  Number of favourable x= 485 number of people surveyed most drank…

Q: Eric invest $1050 every year in an annuity that pays six. Six interest compounded annually. Payments…

A:

Q: (b) What is the sample? The sample is the 668 cases of measles from 27 states reported. The sample…

A: (a) A population is a set or group of observations that correspond to a certain phenomenon under a…

Q: At a particular university, 20% of the students are freshmen and 43% of the students live in a dorm.…

A: Let F denote the students that are freshmen and      D denote the students that live in a dorm. We…

Q: Approximately 76% of statistics students complete their homework before the due date. Each student…

A: Approximately 76% of statistics students complete their homework before the due date.i.e.…

Q: The proportion of individuals in the United States who reported being “very happy” in 2014 was…

A:

Q: In 2017, 77 out of 100 Americans claimed to have read at least one book during the year. Write this…

A:

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

A:

Q: USA today reported that about 20% of all people in the United States are illiterate. Suppose you…

A: Let success be defined as literate people. Probability i=of literate people (or success) is p=0.8…

Q: Suppose you run a non-for-profit organization focused to keeping national parks free of litter.…

A: NOTE: As per the guidelines we are supposed to do the first 3 sub parts only. a). The null…

Q: A musician kept track of the concert arenas on this year's tour and found that 80% of the arenas…

A:

Q: Suppose you run a non-for-profit organization focused to keeping national parks free of litter.…

A: a) Perform the two sample t-test using the  sample data.  H0: μ1=μ2 HA: μ1≠μ2  Null hypothesis: The…

Q: To determine the percentage of patients who follow the advice of their personal physician,…

A: To check :  H0 : P = 0.96   vs H1 :P≥ 0.96 P: population proportion of patients across the nation…

Q: Approximately 19% of music lovers like Country Music. Of those who do, 99% do not have mild brain…

A:

Q: the percentage of us deaths due to diabetes in that year is

A: Let W : White who died,    B : Black who died,     A : Asian who died,        then it is given…

Q: show step by step and answer all questions The 102 highway has a posted speed limit of 70 miles per…

A: The following data is given: Week Mon Tues Wed Thurs   Fri Sat Sun Total Total vehicles 241 199…

Q: Do 8% of Dallas citizens commute to work? A survey on commuting by car was done on a random sample…

A:

Q: According to Inc.com, 79% of job seekers used social media in their job search in 2018. Many believe…

A: a) The null and alternate Hypothesis are H0 : p≤0.79Ha : p>0.79 The sample proportion is…

Q: 2. The airline industry defines an on-time flight as one that arrives within 15 minutes of its…

A: It is given that:The total no. of flights is 1000.The no. of flights, which are on time is 700.The…

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: Forbes magazine published data on the best small firms in 2012. These were firms which had been…

A: age frequency relative frequency cumulative relative frequency 40-44 3     45-49 11     50-54…

Q: A report from 2012 states that 45% of American adults were obese. In this report, adults were…

A:

Q: YouTube is a popular destination on the internet; let's look at how YouTube usage is distributed…

A: Event Y denote that selected internet user has to use internet and Ai ,i=1,2,and 3 denote that…

Q: A pharmaceutical company conducts a study where 50 patients are given a drug. They find that 10…

A: Sample is the subset of the population.

Q: The cancer treatment facts and figures show that for early-stage lung cancer 71% of all patients…

A: Event: In probability theory, an event is an outcome or a set of outcomes of a random experiment to…

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

A:

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols. Thinking…

A: To find: 1.Test statistics 2.p-value

Q: Suppose you run a non-for-profit organization focused to keeping national parks free of litter.…

A: It is given that , you randomly assign 50 individuals to receive the new email format with images…

Q: SOLVE STEP BY STEP IN DIGITAL FORMAT 1.2 Is y = r² a solution of xy" - 2y = 0? Justify your answer.

A: Given differential equation is We have to check whether  is the solution of the given differential…

Q: A survey reported that 10% of 1800 employees favored a new insurance program. How many employees…

A:

Q: To receive a particular professional designation, an individual must pass a specific professional…

A: Given to receive a particular professional designation, an individual must pass a specific…

Q: Approximately 25% of music lovers like Country Music. Of those who do, 5% have mild brain damage.…

A: Given: 25% of music lovers like Country Music. Of those who do like Country music, 5% have mild…

Q: In a survey of 1000 students it was found that 840 own a cell phone, 450 own an MP3 player and 370…

A:

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.