A report says that the average amount of time a 10-year-old American child spends playing outdoors per day is between 19.92 and 24.02 minutes. What is the margin of error in this report?

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: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: can you explain in 800 words,  basic elements of sampling?

A: Sample : Sample is small, manageable, version of large group (population).  It is a subset of…

Q: A software engineering firm began stocking flavored sparkling water in addition to soda in the break…

A: Given data, n=180 x=45 sample proportion (p)=x/n= 45/180= 0.25   The z value at 95% confidence is…

Q: In a recent poll, 130 people were asked if they liked dogs, and 19% said they did. Find the margin…

A: Find z-critical value:…

Q: What is the result of 2.58×0.12, including correct significant figures?

A: Given, 0.58*0.12

Q: What is the Margin of Error, E?

A: Since the sample size is small and population SD is unknown then we will use critical value based on…

Q: Select all measures that will be affected if a student who is 77 inches tall joins the class.

A: Mean is the sum of the observation divided by the number of observation. Thus including the data…

Q: To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes…

A: 16 State the hypotheses. That is, there is no evidence that the mean nicotine content exceeds 27.9…

Q: In a survey of 1009 parents of children ages​ 8-14, 74​% say they are willing to get a second or​…

A: Given n=1009 P=74%=0.74 E=2%=0.02

Q: Calculate the Mean, Median and Mode numbers of persons per house :

A: Here from the given data, we have to find  1) mean: Is nothing but the sum of all observations…

Q: 5. What is the standard error of the estimates (Serror) in thousands of dollars?

A: We are provided with incomplete ANOVA table  4) We have to find R2 and adjusted R2     R2 = 1 -…

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: Explain the concept ofrepresentative sampling.

A: Representative sampling: A representative sample is a subset of a population that seeks to correctly…

Q: A random sample of 2,000 driver's license applications found that 17% reported their eye color as…

A: Solution: Given information: n= 2000 Sample size  p^= 0.17 Sample proportion Assumed Confidence…

Q: a margin of error o

A: Given that  Annual starting salaries for college graduates with degree in business administration is…

Q: ung distributibn of the sample means

A: The given graph is, Observe that the given graph looks like  normal distribution . For a normal…

Q: se a study revealed 5*

A: Given, a study revealed 57% of all subjects possessed trait A, 28% possessed trait B, and…

Q: The U.S. Census Bureau says that 52-question 'long form' received by households during 2000 census…

A: let the sample mean be = 36.8 and let the sample standard deviation = 4

Q: Find an estimates of the average number of accidents per week in two different junctions.

A: Here given, Speed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in…

Q: Describe about Margin of Error?

A: The area of variation of values above and below the sample statistic in a  computed confidence…

Q: In a survey of 1200 workers, 35% said they eat at home during a typical work week. What is the…

A:

Q: What is the proportion of the total incidence of CHD in smokers that is attributable to smoking? Use…

A: Given Information: Total no. of participants=4560No. of Total smokers=2249No. of smokers having…

Q: What is Margin of Error?

A: Margin of error: The margin of error is defined as a statistic that gives the amount of sampling…

Q: can you explain in 800 words, the application of work sampling in healthcare?

A: The application of work sampling is used to calculate the proportion of time spents by workers  also…

Q: What is the distinctive property of ordinal measurement?

A: Introduction: There are broadly 4 scales of measurement used in Statistics, that either categorize…

Q: I want to be sure to obtain a margin of error of ±5 % in a poll asking whether people support…

A: Given information: Margin of Error=+/-5%=0.05 Let level of significance=0.05 Let the proportion of…

Q: Which statistical measurement is used to measure minutes?  Is it ordinal, nominal or scaled?

A: Nominal: When the possible observations are tags or categories or names, without any natural…

Q: Estimate the average by first round to nearest 1,000: 1,00, 2,300, 2,600

A: TO Estimate the average by first round to nearest 1,000: 1,00,     2,300,        2,600

Q: Nhat areas make up the lowest 15.8% of the distribution?

A:

Q: A November 2018 Gallup Poll of 1075 U.S. adults found that 627 are satisfied with the total cost…

A:

Q: What is an ethical weakness of official stats?

A: Official statistics are a major source of secondary data. The term refers to any set of data…

Q: Calculate a point estimate for the proportion of all MVCC students that have brown eyes. Do not…

A: A random sample eye colors collected from a group of 40 MVCC students are considered in which there…

Q: In a Harris poll of 500 human resource professionals, 230 said that body piercings and tattoos were…

A: Here, the confidence level or level of significance is not mentioned. In general, it would be…

Q: Determine the level of measurement of the variable: Year of birth of college students

A: Level of measurements: Nominal measurement:   Nominal measurement is the most basic form of…

Q: A uSa today/CNN/Gallup survey of 369 working parents found 200 who said they spendtoo little time…

A: It is given that the number of parents said they spend too little time with their children because…

Q: a) What proportion of workers answered yes to the survey? b) What was the margin of error?

A: Here, the 95% confidence interval for the proportion of workers that answered 'yes' is (0.62, 0.73).…

Q: Online surveys have become common due to the ease of distribution. Discuss how random Internet-based…

A: 1. Online or internet-based surveys have become very popular. The reasons behind the popularity are…

Q: Suppose that the results of a survey show that 53% of people consider summer as their favorite…

A: Given that Results of a survey show that 53% of people consider summer as their favorite season.…

Q: Please provide a sample of 25 formulas in the Engineering economy.

A:

Q: State the generic error for an interpolating formula?

A:

Q: 4. What happens to the accuracy on the left margin?

A: A map is a graphical representation, for an established scale, of a part of the earth's surface,…

Q: Explain about Margin of Error?

A: Margin of error: Margin of error is a range of values that lie above and below the sample statistic…

Q: What does the margin of error for the estimate of a population proportion tell you?

A: The formula for margin of error can be written as:

Q: determine the point estimate and the margin of error.

A:

Q: report says that the average amount of time a 10-year-old American child spends playing outdoors per…

A: Given report says that the average amount of time a 10-year-old American child spends playing…

Q: time a 10-year-old American child spends playing outdoors per day is between 19.28 and 24.08…

A: Given Data Lower limit = 19.28 upper limit = 24.08

Q: Suppose you go to the grocery store and spend $61.85 for the purchase of 14 items. What is the mean…

A: 6. The mean is the average value of the data set and is computed by summing up all the observations…

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.