A comprehensive survey released by a college reports that the true proportion of all students at the college who use drugs is 0.3. You survey 100 students in your dorm and record that the proportion of students who use drugs is 0.15. The proportion of all students at this college who use drugs is a ____________________ and the proportion of students who use drugs in your dorm is a ___________

Q: Thirty-seven percent of all Americans drink bottled water more than once a week (Natural resources…

A: Z = p^ -E[p¯]σp¯~ N(0,1)

Q: Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for…

A: Stem-Leaf: Stem and Leaf plot is similar to histogram Stem and Leaf is another way of representing…

Q: Many people think that a national lobby's successful fight against gun control legislation is…

A: Given that , A random sample of 4000 citizens yielded 2130 who are in favor of gun control…

Q: Critics of television often refer to the detrimental effects that all the violence shown on…

A: It is stated that watching television also reduces the amount of physical exercise, causing weight…

Q: The table displays data on use of Facebook by two groups of Penn State University students.  It is…

A:

Q: Wildlife: Mallard Ducks and Canada Geese For mallard ducks and Canada geese, what percentage of…

A: "Since you have posted a question with multiple subparts, we will solve the first 3 sub-parts for…

Q: www. ***.* * How profitable are different sectors of the stock market? One way to answer such a…

A:

Q: Social Media Use. A marketing firm would like to test-market the name of a new energy drink targeted…

A:

Q: Show your complete solutions A sociologist feels that the median age at which women marry in…

A: Given that,  A sociologist feels that the median age at which women marry in Palawan, is less than…

Q: As humans we consume food. The body extracts good things such as proteins and vitamins and throws…

A:

Q: Practice Test: A researcher wants to estimate the prevalence of breast cancer among women who are…

A: From the provided information, Proportion (p) = 0.0043 Margin of error (E) = 0.001 Confidence level…

Q: In a 70-item test, Ronnel got a score of 50 which is in the third quartile. This means that:   A. He…

A:

Q: The scatterplot illustrates the relationship between distance and success rate of field-goal…

A: The graph shows a relationship between the distance and success rate.  It can be seen that the graph…

Q: A student's statistics test is 18 questions and worth 30% of their overall grade. The student is…

A:

Q: tistics question is belo

A: The following null and alternative hypotheses need to be tested: This corresponds to a left-tailed…

Q: Radon: The Problem No One Wants to Face” is the title of an article appearing in Consumer Reports.…

A:

Q: Save Exit polling is a popular technique used to determine the outcome of an election prior to…

A:

Q: As humans we consume food. The body extracts good things such as proteins and vitamins and throws…

A: The sample mean and standard deviation of the test results is,

Q: Lena is a college basketball player who has made 75% of the free-throws she has attempted in her…

A: Based on the given information, it is known that proportion of free-throws made by Lena in her…

Q: Pain medications sometimes come with side effects. One side effect is dizziness. A researcher wanted…

A: Here their are 5 pain medication are used and measure the count of people with and without…

Q: What is the projected number of people with Alzheimer's disease in the United States age 65 years…

A: Given: The number of people with Alzheimer's disease in the United States age 65 years and over is…

Q: 3. Germaine is researching the reliability of a car she's thinking of buying. Which data source is…

A: Note: As requested by you, we have helped you with only question number 3.

Q: point) A choral conductor has 1124 singers in her choir, some of them are professional singers. The…

A: Population:The set of all subjects of interest can be termed as population.Sample:The subset of the…

Q: Many people think that a national lobby's successful fight against gun control legislation is…

A: We have given that  A random sample of size n=4000 ,favorable cases x=2130 and  Point estimate p^=…

Q: The boxplot below shows salaries for Actuaries and CPAs. John makes the first quartile salary for…

A: From the given figure, First quartile value for an Actuary is 65 thousand dollars. First quartile…

Q: Some boxes of a certain brand of breakfast cereal include a voucher for a free video rental inside…

A:

Q: The boxplots for the grade scores in the midterm exam in a Calculus I class for two different…

A: The boxplots for the grade scores in the midterm exam in a Calculus I class for two different…

Q: Ah after-school program offers tutoring for different subjects. During the last month, a teacher…

A: From the given information we want to predict the math tutoring student out of 100

Q: Childhood obesity: A national health survey weighed a sample of 537 boys aged 6-11 and found that 85…

A:

Q: 4. According to a recent report, 40% of high school students participate in some kind of music…

A:

Q: Thirty-two percent of all Americans drink bottled water more than once a week (Natural resources…

A: Given: The population proportion, P = 0.32 Part a: The sample proportion, p¯ is an unbiased estimate…

Q: As humans we consume food. The body extracts good things such as proteins and vitamins and throws…

A:

Q: Part A. Depression affects many people. 25 out of 100 people with untreated depression will lose at…

A: We have to find The absolute risk of losing at least one friendship while being treated with…

Q: 4. The proportion of senior male students’ height is significantly higher than that of senior female…

A: Since we know that  One talied test is a test in which area of the distribution in only one side i.e…

Q: Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for…

A: Steps for Stem-and-leaf diagram: In stem plot each of the observation is separated into two parts,…

Q: Childhood obesity: A national health survey weighed a sample of 535 boys aged 6 - 11 and found…

A:

Q: Which of the following is an example of a population?     A group of eighth grade boys…

A: In statistics, a population is the pool of participants from whom a statistical sample is selected…

Q: A researcher records the change in weight (gain or lost) during the first semester of college for…

A: A researcher records the change in weight (gain or lost) during the first semester of college for…

Q: As humans we consume food. The body extracts good things such as proteins and vitamins and throws…

A: From the provided information, Sample size (n) = 6 The mean of the data can be obtained as:

Q: You are doing a study for a non-profit group helping at-risk children in your city. Suppose you know…

A: given statment:you are doing a study for a non profit group helping at risk children in your city.…

Q: Did I answer the question correctly? Thank you for your asssitance. In a nursing home, a program is…

A: Prevalence:Prevalence is the proportion of individuals in a population having a disease or…

Q: Before an increase in excise duty on tea 400 people out of a sample of 500 persons were found to be…

A:

Q: Applications The median number of part-time employees at fast-food restaurants in a particular city…

A:

Q: Parts a and b please  The American Press Institute reports that almost 70% of all American adults…

A: Solution

Q: s humans we consume food. The body extracts good things such as proteins and vitamins and throws…

A: From the provided information, Sample size (n) = 5 The mean of the data can be obtained as:…

Q: Q2/ A doctor is studying the relationship between blood pressure and heartbeat abnormalities in her…

A: Given data:     The percentage of the patient having high blood pressure is: P(H)=16% The percentage…

Q: ome college students like taking online classes. Other students prefer face-to-face classes. COVID…

A: The given data is: 70.2 74.2 75.8 76.4 68.8 61.3 67.1 67.1 63.5 76.4 92.9 74.2 69.6 92.9

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.