At this weekend’s football game, 15 out of the first 50 people who entered the field were not wearing hats. If this sample is representative of the 250 people attending the game, about how many of them will probably NOT be wearing hats?

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: This year's statistics class was small (only 15 students)

A: Question: In a study examining the effects of a new medication on blood pressure, a sample of 500…

Q: According to past reports 51% of employees own a car. In a random sample of 106 employees, how many…

A: Total no.of employees(n)= 106 The percentage of employees own a car(p)= 0.51

Q: The results of the survey are shown in the table. Is there an association between owning a cell…

A: Formula : Test statistic is

Q: According to the U.S. Census Bureau, 69% of children under the age of 18 years in the United States…

A: a. Here, it is of importance to know whether the new sample shows 69% of the children live with two…

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: What percentage of those sampled had high blood pressure? What percentage of those sampled were over…

A:

Q: You want to know what percentage of students own pets at your university. In asking 10 random…

A: In an observational study, researcher observes the individuals and measure the outcomes. In this…

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: According to past reports 48% of employees own a car. In a random sample of 250 employees, how many…

A: Total no.of employees=250 The percentage of employees own a car=0.48

Q: In a survey of middle school students, 70% play basketball and 40% play basketball and football. Of…

A:

Q: 6 of the last 10 sundaes sold had nuts. Considering this data, how many of the next 5 sundaes sold…

A: The probability that sundaes sold had nuts is, Psold sundaes have nuts=610=0.6 The probability that…

Q: A survey among Harvard students was conducted. It is about their starting position when they sleep…

A: Do the collected data represent a sample or population? Explain your answer.

Q: A school principal surveys 4 freshman, 4 sophomores, 4 juniors, and 4 seniors. For the situation…

A: We have to find correct answer for given data....

Q: A researcher wants to estimate the percentage of adults in Georgia that have not graduated from high…

A: As we know Statistics represents sample and Parameter represents population.

Q: It can be said that a sample is representative of the population. What is meant by this?

A: It is given that the statement about to the sample.

Q: Suppose that in a group of 800 women, the percentage who work is the same as in the sample here, how…

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131

Q: A psychologist is concerned about the health of veterans returning from war. She examines 37…

A: In the above example All veterans returning from war is the population for the study that hey show…

Q: The names of all 50 students in a class are written on identical slips of paper, and the slips are…

A: The sample can be drawn from population in different ways. Some of the basic sampling methods are…

Q: If we wanted a random sample of students in a cafeteria, why couldn't we just take the students who…

A: Answer: Here random word itself says that we couldn't just take the students who order coke with…

Q: How many of the 3088 subjects used at least one prescription​ medication?

A: Number of adults aged 57 through 85 years in a survey, n = 3088 p be the probability that an adult…

Q: The secretary in a statistics department would like to estimate how much coffee to brew per day such…

A: From the following data we have to calculate mean, standard, and confidence interval

Q: 8. A sociologist chose 300 students at random from each of two schools and asked each student how…

A: Median: Middle value when data arranged in ascending order

Q: If there are six groups being compared, how many mean comparisons will there be?

A: Given there are six groups.Here, it is required to find the total number of comparisons.

Q: Each customer entering a department store will either buy or not buy some merchandise. An experiment…

A: To determine the number of sample points in the experiment, we need to consider the possible…

Q: Of the 150 students in the third year group at a school, 60 are boys. Stratified random sampling was…

A:

Q: A large group of workers is divided into three departments: those who work in special operations,…

A: The health inspector would like to know if these data provide convincing evidence that the…

Q: If a survey of a movie shows that 50% of all people who like the movie, enjoyed the official movie…

A: Introduction: Population of interest: The population of interest includes all the individuals of…

Q: In a survey of 3367 adults aged 57 through 85​ years, it was found that 84.2​% of them used at least…

A: A survey of 3,367 adults aged 57 through 85​ years. There is 84.2​% of them used at least one…

Q: Suppose 20% of the students on campus smoke. You select two students at random. In what percentage…

A:

Q: A random sample of 40 students from each grade level was surveyed regarding their preference for a…

A: I have given an answer in step 2.

Q: oms. The researcher picks 2 of the 4 classrooms and asks every 1st grader in the 2 classrooms what…

A: A researcher studying allergies to animals is interested in performing a study at the local…

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.