Lilo wants to know if equal proportions of students in her class know how to surf well, know how to surf a little or do not know how to surf. She randomly samples 60 students in her class and asks them if they know how to surf. Twenty students indicate that they do not know how to surf 'don't know', while 30 students indicate they know how to surf well 'know well,' and 10 students indicate they know how to surf ‘a little’. State the hypothesis being tested by Lilo (H0 and HA)? Test Lilo's hypothesis at α of .05. Enter the test statistic, critical value, and decision as part of your answer. Test statistic = Critical value = Do you reject or retain the null hypothesis that the slope is not different from zero? (Enter "Reject" or "Retain"):

Q: What is the upper level (UL) of the 95% confidence interval that the proportion of all the tourists…

A:

Q: At The Fencing Center, 60% of the fencers use the foil as their main weapon. We randomly survey 28…

A: Given n=28 P=1-0.6=0.4

Q: Lilo wants to know if equal proportions of students in her class know how to surf well, know how to…

A: Hypothesis being tested by Lilo :  Null : H0: Equal proportions of students in her class know-how to…

Q: Mia randomly surveys students in her middle school to learn about their favorite type of novel. Of…

A: Given : Mia randomly surveys students in her middle school to learn about their favorite type of…

Q: There were 150 students that were asked about their favorite animal.  23 students chose hamsters, 48…

A: Total students = 150 No. of students who chose hamsters as their favorite animal = 23 No. of…

Q: ccording to the U.S. Bureau of Labor Statistics, approximately equal numbers of men and women are…

A: It is given that: For the Industrial sector: The no. of sample size, n1=110. The no. of sampled…

Q: At a small Midwestern college, a survey determined that 61% of freshmen participated in…

A: Given that, The event A is participated in intercollegiate athletics The event B is participated in…

Q: Of the 300 visitors polled,O liked to ski or snowboard. (Type a whole number.)

A:

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 8. Do…

A: As per guidelines expert have to answer first question three subparts only dear student please…

Q: In a poll of 556 human resource​ professionals, 42.3​% said that body piercings and tattoos were big…

A: Number of human resource​ professionals (n) = 556 Probability of success (p) = 42.3% = 0.423

Q: ecause of practical considerations you ultimately decide to survey 100 people and find that 75 of…

A: here , from 100 people and find that 75 of them would prefer to work at home to some extent. n = 100…

Q: A fast food chain surveyed a random sample of students to determine what pizza they prefer. Cheese…

A:

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: Suzie

A:

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: Right now I am in the beautiful city of Vancouver, Canada but can't enjoy my time here since I have…

A: From the given information, the sample size is n=139 and X=72 Consider, the sample proportion s,…

Q: In a CBS News survey done in 2006, 88% of n = 348 randomly sampled married men said that they would…

A: Given that  Sample sizes n1=348 , n2=584 Sample proportion p1^=0.88 , p2^=0.84

Q: A middle school has 250 students. Jenny surveys a random sample of 50 students and finds that 15 of…

A: Total number of students in school = 250 Sample taken of 50 students Number of students having maths…

Q: Suppose a certain virus (sorry!) affects 0.3% of the population. A test used to detect the virus is…

A: 0.3% of 100000 population have virus.  0.3*100000/100= 300  people have virus.  88% have virus and…

Q: Suppose you want to find a simple random sample of 75 questions out of the entire population of…

A: Here the entire population contains N = 3631 questions. A simple random sample of size n = 75…

Q: ts) Suppose that 2% of all children have tuberculosis (TB). When a child who has TB is given the…

A: Let A1: The child has TB A2: The child does not have TB From given information P(A1)=0.02 P(A2)=0.98

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: Suppose a questionnaire has 11 questions. In how many ways can the questionnaire be answered if each…

A: A questionnaire has  questions. Each question requires a yes or no response followed by a -part…

Q: Miller Junior High is considering changing its school colors.  The results of a survey that 16 out…

A: Topic : unitary method

Q: Suppose you have a group of fourth graders and a group of eighth graders, and you want to compare…

A: We have to determine which test use for given situation.

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: 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: Social Survey is an annual survey given to about 1500 U.S. adults selected at random. A recent…

A:

Q: A test question is good if it discriminates between prepared and unprepared students. The first…

A:

Q: 15. Fifty-two volunteers participated in an experiment to investigate the effect of noise on…

A: The given experiment has no control group. Hence, it is clear that the control group and…

Q: You know that 70 percent of the subs at theme parks in the US are yellow.  There are 220 subs in…

A: Solution Given that  We have total sub parks in the US = 220 we know , 70% of them are yellow = 154

Q: In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests."…

A: Given information: Sample of 200 buses and find that 20 buses fail the safety inspection. Let us…

Q: In a recent Gallup poll, 1003 randomly selected adults in the United States were asked if they have…

A: According to the provided information, 1003 randomly selected adults in the United States were asked…

Q: A survey found that 58% of American adults said they use the Internet. If 20 American adults are…

A: Answer - A survey found that 58%   i.e P = 0.58               n= 20,    x = 12

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.