A random sample of 268 college students were asked if they believed that places could be haunted, and 41 responded yes. Estimate the true proportion of college students who believe in the possibility of haunted places with 94% confidence. According to Time magazine, 37% of Americans believe that places can be haunted. Round the answers to at least five decimal places. Use a graphing calculator.

Q: The side-by-side boxplots show the cumulative college GPAs for sophomores, juniors, and seniors…

A: Given, Boxplots show the cumulative college GPAs for sophomores, juniors, and seniors taking an…

Q: 4) Predict the acres per fire for a fire occurring in 2025. Is this a reliable prediction? Why or…

A: Note: Hey there! Thank you for the question. As you have particularly mentioned that you need help…

Q: Based on the model, what percent of people should have IQ scores above 116? What percent of people…

A: Given a normal distribution with  mean 100 and standard deviation 16.IQ score 116 is one standard…

Q: Kevin scored at the 70th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: The name of your cat is an example of nominal data. True False

A: There are four types of scale(or level) for measurement, i.e.,  Ratio scale: data is continuous…

Q: The indicated IQ score, x, is

A: Let X represents the distribution of IQ scores. Given that X~N(mean= 100, SD= 15), then Z = (X -…

Q: the mean = 146, and s =  35 Question #3 A percentage of female students with scores between 41 and…

A: From the provided information, Mean (x̅) = 146 Standard deviation (s) = 35

Q: What percent of students had an IQ of at least 120​?

A: From the given histogram, the frequency table can be observed as shown below:

Q: the mean = 146, and s =  35 Question #5 you can infer that 97.72% of female students have scores…

A: It is given that the mean is 146 and the standard deviation is 35.

Q: You are told that your IQ scores falls at the 79th percentile.  What conclusion could you make about…

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: ) What is the point estimate for the percent who want to change the town’s name? (b) What is the…

A: We can solve the problem as follows

Q: When taking a 34 question multiple choice test, where each question has five possible answers, it…

A: Given information- No. of question on multiple choice test, n = 34 Probability of correct answer, p…

Q: If I tell you that you scored at the 85th percentile know:

A: Here use definition of percentile  Percentile represents the how much data below or at that value…

Q: In a sample of n= 6 scores, five of the scores are each above the mean by one point. Where is the…

A: The mean of a data can be obtained as follows:

Q: The fifth unit of a 25-unit job took 14.5 hours to complete. If a 90 percent learning curve is…

A: Here, total time factor for 90 percent learning curve and unit of 5 is 0.783.                ∑Tn =…

Q: When taking a 24 question multiple choice test, where each question has five possible answers, it…

A: From the given information,

Q: If all the plots on a scatter diagram lie on a straight line, what is the standard error of…

A: If all the plots on a scatter diagram lie on a straight line, it means that the predicted value is…

Q: A health journal conducted a study to see if packaging a healthy food product like junk food would…

A:

Q: Average adult Americans are about one inch taller, but nearly a whopping 25 pounds heavier than they…

A: As the population standard deviation is unknown, the sample standard deviation must be used while…

Q: An educational researcher wants to see if the number of hours that a student watches TV is somehow…

A: The scatter plot is obtained using EXCEL. The software procedure is given below: Enter the data.…

Q: Solve the problem. Round the point estimate to the nearest thousandth. 6) Find the point estimate…

A: Here we need to find the point estimate for the proportion of people who wear an hearing aid.

Q: According to a Mobile Marketing Company's survey of 2000 people, 60% said that they use their mobile…

A: We have to find nom of successes in given sample.

Q: tracked The number of visitors tha The 42 randomly selected

A: Statistics is the science that includes collection of data , cleaning, organizing , analyzing the…

Q: According to a study, 39% of experienced file-sharers with broadband access had decreased their…

A:

Q: Intelligence as measured by IQ score 136 is best described as

A: Hint: There are four types of measurement scales Nominal: it is a Categorical variable that…

Q: Given the mean of a certain data set as 155, what will be its new mean if all the data points were…

A: Remark: We know that, The mean (average) of a data set is found by adding all numbers in the data…

Q: When taking a 15 question multiple choice test, where each question has five possible answers, it…

A: From the given information,

Q: According to health statistics taken to observe obesity in men 6 feet or taller: A = 250 pounds is…

A: Note: Thank you for the question. Since multiple questions are posted, we are answering the first…

Q: A laptop manufacturer claims that the mean life of the battery for a certain model of laptop is more…

A: Claim: the mean life of the battery for a certain model of laptop is more than 5 hours.

Q: A raffle has a grand prize of a Alaskan cruise valued at $15000 with a second prize of a weekend in…

A:

Q: Ranking a group of cities in terms of quality of life would be an example of measurement on a ____…

A: There are several categories which can be used to represent the quality of life within a city.This…

Q: A cognitive psychologist working in the area of suggestion asked a sample of children to solve as…

A: According to our answering guidelines, we can answer only first three subparts of a question and the…

Q: A rental car company purchased a new Toyota Camry for $35,000. The company determined this asset…

A: NOTE: Refresh your page if you can't see any equations. . The company determined this asset should…

Q: A health journal conducted a study to see if packaging a healthy food product like junk food would…

A: Provided information: n=407, X bar=3.28 s=2.55, µ=3 The null and alternative hypothesis is, Ho: The…

Q: A relationship expert wants to know if people with higher levels of emotional intelligence (measured…

A: Solution: Given information: X: Emotional Intelligance Score  Y: First Impression Rating. Mx=…

Q: According to Deloitte, through January 25,2006, the majority of companies reporting profits had…

A:

Q: What is the minimum z-score that a data point could have in order to remain in the top 5%5% of a set…

A: P(Z>z0)=5%Using standard normal distribution table

Q: A survey of 1104 adults nationwide asked, what irks you most about the actions of other motorists?…

A: Percentage is the ratio of people responded tailgators to the total people surved.

Q: A survey found that about 49% of the people who work at an accounting firm take a company car pool…

A: Find the estimate number of the people and the actual number of people

Q: A colleague of yours is faced with testing a relationship at the .05 level or significance or the…

A: Level of significance The level of significance is defined as the probability of rejecting a null…

Q: A random sample of students was surveyed and asked to list their grade level and whether or not they…

A: Given, First finding for 6th grade, Pets + No pets = Total 28+No pets=38 No pets=38-28 No pets=10…

Q: An online test of English spelling looked at how well people spelled difficult words. The bar graph…

A: Here  The given bar graph shows how many people per 100 spelled each word correctly.

Q: When taking a 27 question multiple choice test, where each question has five possible answers, it…

A: Given information- No. of question on multiple choice test, n = 27 Probability of correct answer, p…

Q: You have been tracking how much you spend on gas every month for several months and found that on…

A: The interquartile range is the difference between the third quartile and the first quartile and it…

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 .…

A: From the provided information, The scores on the Wechsler Adult Intelligence Scale are approximately…

Q: Use the graph of the best fit line on the scatter plot to made the prediction. If another child in…

A: Here we are given is a scatter plot with the line of best fit. We know that we can make predictions…

Q: In July 2019, a study reported that 63% of Americans use Instagram daily. An SRS of 15 PCC students…

A:

Q: @ Briefly deuribe the difference be tween estimations and hyporhenis testing.

A: In inferential statistics, data from a sample is used to “estimate” information about the data from…

Q: Solve the problem. Round the point estiamte to the nearest throusandth.  6) Find the point estimate…

A: Let X be the people had hearing aids  n be the random sample Given X=20, n=304

Q: When an airline sells tickets for a flight, only about 90% of people who buy a ticket actually show…

A: a) The 95% confidence interval for the sample proportion is obtained below: The proportion p =0.60…

Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A:

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.