recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wall Street Journal, May 5, 2010). Suppose a random sample of 100 teen drivers is taken. What is the probability that the sample proportion is within ±0.02 of the population proportion?

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: The quality control manager of​ Marilyn's biscuits is inspecting a batch of​ chocolate-chip biscuits…

A:

Q: Historically, the final exam for an introductory statistics course has had a 75% pass rate. Suppose…

A: From the provided information,p = 0.75n = 250

Q: According to a recent study, 14% of U.S. drivers are uninsured. A random sample of seven drivers was…

A:

Q: It has been estimated that 30% of post-secondary students switch majors within their first two years…

A: Population: Population consists of the complete subjects that are included in the study for making…

Q: aple of fifty college students, what is the probability that at least forty of them participate in a…

A:

Q: In one study of calls to 911 in Los Angeles, it was found that 85% of the calls were not…

A: Solution: From the given information, the proportion of the calls were not emergencies is p=0.85 and…

Q: According to a study by a road safety interest group, the probability that speeding is a cause of a…

A: We have to find given probability.

Q: A study showed that 64.5​% of occupants involved in a fatal car crash wore seat belts. Of those in…

A: Solution: Let A be the event that  occupants involved in a fatal car crash wore seat belts. P( A)=…

Q: According to an article published at heart.org in 2015 regarding a variety of US health data: Given…

A: Solution: Given information: Let A  be the event that someone in the US has a first time  heart…

Q: The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a…

A: Solution: Let X be the average monthly grocery bill for an individual is normally distributed with…

Q: What is the probability that the two sample proportions will differ by more than

A: From the given information, p=6.2%=0.062p1=10.2%=0.102n1=500p2=8.3%=0.083n2=200

Q: An insurance company says there is a 77% likelihood that you will be responsible for a car accident…

A: p = 0.77 n = 320 million  ==============================

Q: The chances of an error occurring in any single line of code is found to be 0.001 (0.1%). If a…

A: Giventhe no. of error occuring in any single line of code is 0.001The no. of error for 500 lines is…

Q: The Statistical Abstract of the United States reported that 18.2% of students whose post secondary…

A: Let X be the number of students whose post secondary degrees were health professions and related…

Q: Suppose the prevalence of alcoholism among college students is 20% among those living in group…

A: It is given that the prevalence of alcoholism(A) among college students is 20% among those living in…

Q: A study showed that ​69.7% of occupants involved in a fatal car crash wore seat belts. Of those in a…

A:

Q: According to a study, 20% of corporate officers are women. Suppose that you select a random sample…

A:

Q: According to the Federal Insurance Agency statistics, the proportion of teenage drivers between the…

A: It is given that n=100 and p=0.54.

Q: A certain statistics class has 18 female students and 12 male students. What is the probability of…

A: Number of female students = 18 Number of male students = 12 Total number of students = 18+20…

Q: About 13% employed adults in the US held multiple jobs. Random sample of 74 employed adults is…

A: Given, About 13% employed adults in the US held multiple jobs. Random sample of 74 employed adults…

Q: The USDA reports that 31% of four-member households spend less than $100 per week on groceries.…

A: Given p=31%=0.31 n=600 Here, the sample size is large. Hence, we can use normal approximation.…

Q: Quality control. An assembly plant produces 40 outboard motors, including 7 that are defective. The…

A:

Q: A recent study by Allstate Insurance Co. finds that 78% of teenagers have used cell phones while…

A:

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: If the probability of contracting a certain illness is 0.0433, would it be considered statistically…

A: Let p be the probability of contacting a certain illness  Given  p=0.0433

Q: 1. A patient newly diagnosed with a serious ailment is told he has a 60% probability of surviving 5…

A: In the medical field, patients often receive information that may be difficult to comprehend,…

Q: etter than those without cats? To help answer this question, a cat enthusiast obtained a random…

A: Do you have a Cat? Yes No How well do you sleep? Good Neutral Bad     Good…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.