The proportion of commuters on PSU – Berks campus is purported to be 65%. A professor believes this to be inaccurate.  He randomly selects 300 students on campus and determines 200 of them to be commuters.  Can the professor reject the campus claim of 65%?

Q: Four students achieve the following grades on their midterm which was out of 20 marks: 4, 4, 4, 20.…

A: The mode is 4 as its is the highest occurring frequency. So it will reflect the accuracy or more…

Q: In order to have a margin of error of 2%, people should be surveyed.

A: we are given that 24% people consider summer as their favourite season (p) = 0.24 to find  number of…

Q: In 2016 the Better Business Bureau settled 77% of complaints they received in the United States.…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Suppose that 54% of people own dogs. If you pick two people at random, what is the that they both…

A: Given: P(Dog) = 0.54 The probability that they both own a dog can be calculated as: P(Both own a…

Q: Nolan surveyed 7 teachers from each academic department at school. Each department has an equal…

A: Given: 7 teachers from each academic department surveyed Each department has an equal number of…

Q: A national health survey weighed a sample of  530  boys aged  6 - 11  and found that  78  of…

A: Given : Claim : The proportion of boys who are overweight is greater than the proportion of girls…

Q: Kala has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via…

A: There are two independent samples which are 10 Freeway and 60 Freeway. We have to test whether the…

Q: The city of Wonderland has 12000 registered voters. There are two candidates for city council in an…

A:

Q: About 2% of the population has a particular genetic mutation. 600 people are randomly selecte Find…

A: Given data,p=2%=0.02n=600Mean=?

Q: The data collection method can best be described as Census Clinical study Controlled study Survey

A: Here we have given the multiple choice question about the methods of sampling. The question is,   As…

Q: in the previous example, the adult weighing 285 pounds decides to not paricipate in the study. what…

A:

Q: Suppose that 43% of people own dogs. If you pick two people at random, what is the both own a dog?…

A: Given, Probabily of a person own a dog is 43 %

Q: A researcher wants to find out the number of students he needs to urvey in a school provided that…

A: Given : total no pf students in a school  N=5000 with margin of error e=5%  To find sample size…

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: se Brianna's sample to estimate the number of red gumballs in the jar.

A: Given that  Class jar containing 200 gumballs of two different colors  (Red and green) Brianna draws…

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: f the score of 3 courses for a student who studied at a university are 81, 62, 74 with credit hours…

A: Solution: The scores of three courses for a students are  X= 81, 62 and 74 The credit hours  that is…

Q: In a recent poll, 450 people were asked if they preferred cats or dogs. 52% said they preferred dogs…

A: Given data: n = 450  52% said they preferred dogs and 48% of people said they preferred cats, with a…

Q: In 2016 the Better Business Bureau settled 79% of complaints they received in the United States.…

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

Q: among students of a certain university 38 like peanut butter, 34% like nutella, and 12% like both.…

A: It is given that:Proportion of students like peanut butter: Proportion of students like nutella:…

Q: If 200 subjects were studied and 120 of them expressed a preference for Brand X, what percentage…

A: The total number of subjects is 200.

Q: A study was conducted to investigate whether local car mechanics charge women more than men for a…

A: The data set of repair prices and the differences…

Q: cently a community college offered a 2-credit course to help students with math anxiety. At the…

A: Calculate the following values: Before(x) After(y) x2 y2 x*y 72 69 5184 4761 4968 66 52 4356…

Q: If in a village actually involved by anthrax, 70 per cent of the goats are attacked and pei cent…

A:

Q: Maci is a social networking maniac! Although she prefers Instagram, she also spends a lot of time…

A: Introduction A variable is a no., characteristic which can be counted or measured.

Q: s the newly hired manager of a company that provides cell phone service, you want to determine the…

A: It is given that margin of error (E) is 0.92 and the confidence level is 0.90.

Q: Last year, 41% of business owners gave a holiday gift to their employees. A survey of business…

A: Given Information : Population proportion , p = 0.41. Sample proportion , p⏞ = 0.32. Number of…

Q: According to the US Census Bureau in 2021, 23% of children under 18 live with only one parent.…

A: To test whether the percentage of children under 18 living with only one parent in Beacon Hills,…

Q: Suppose that the results of a survey show that  24%  of people consider summer as their favorite…

A: Solution: From the given information, p=0.24 and E=0.02.

Q: Suppose 50% of all voters in a population support a politican, SHARE What is the zscore of sample…

A:

Q: Suppose an internet marketing company wants to determine the percentage of customers who click on…

A: Margin of error=E=5%=0.05 , Confidence level=C.I=94%=0.94

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.