QUESTION 1 A magazine article reported that more than 11% of adults buy takeout food daily. A fast-food restaurant owner surveyed 200 customers and found that 32 said that they purchased takeout food daily. At  = 0.05, is there evidence to believe the articles’ claim? QUESTION 2 [5m] The average family size was reported as 3.18. A random sample of families in a particular district resulted the following family sizes: 5 4 5 4 4 3 6 4 3 3 5 6 3 3 2 7 4 5 2 2 2 At  = 0.01, does the average family size in that district differ from the national average?

Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: The sample of teenagers time is 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6.

Q: Suppose 4 percent of the children in the US are thought to be near the juvenile diabetes threshold.…

A:

Q: We predict that children exhibit more aggressive act after watching a violent television show. The…

A: Given, The scores for ten children were recorded before they watched a violent show and then after…

Q: When the IV and DV are both numeric, which statistical test is most appropriate to use for…

A: Regression analysis is used to estimate the relationship between variables. There will be one…

Q: Assuming a sample size of​ 1,000 for this​ poll, construct a 90​% confidence interval for the true…

A: It is given that Sample size n = 1000 Sample proportion = 0.62 The critical value of z at 90%…

Q: Why is a sample often a better way to obtain information about a population than a census? A. A…

A: Census:- In census,we collect our survey data from entire population.   Sample :- In sample ,we…

Q: There are four brothers in a family.  Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Sample size (n) = 4 The data values are as follow: 7, 10, 15, 21

Q: We predict that children exhibit more aggressive act after watching a violent television show. The…

A: Given : We have given that , Sample 1 (after TV show): 5,6,4,4,7,3,2,1,4,1 Sample 2 (before TV…

Q: student decides to spin a dime and determine the proportion of times it lands on heads. The student…

A: We have given that  Sample size n = 25 Favorable cases x =17 Population proportion p =0.5

Q: The most important advantage of experiments over observational studies is that . a confounding…

A: Experiments give better evidence of causation.

Q: of adults are smokers. A random sample of 300 adults is obtained.

A: As given, Let X be the random variable such that number of adults who are smokers. According to the…

Q: A recent study investigated the population density of burrowing owls in the Imperial Valley. In this…

A: We want to find 90% confidence interval for population mean

Q: If the sample size is n=16 what is likely true about the shape of the population?

A: Solution:  Central limit theorem: The central limit theorem state that as the sample size increases…

Q: Test at the 4% significance level if the proportion of men who have a tattoo is or is not close to…

A: Here use single proportion z test

Q: Given the sample 2, 19, 6, −2, add one more sample value that will neither change the mean nor the…

A: Given data The sample is 2, 19 , 6 , -2

Q: Even if an investigated treatment has an effect it is still possible to obtain a sample mean that is…

A: Given Solution:

Q: Find the values of the UCL and LCL for the R chart for this data

A: Number of sub-groups = 20 Sample size n = 7

Q: 2. Paired Sample: A health educator wants to evaluate the effects of a dental film on the frequency…

A:

Q: Using the same anti-venom study, answer the following questions. A study was done on children (6…

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

Q: In a race, the top 15% of racers win a $50 gift card. If the sample is normally distributed with a…

A: The normal distribution problems would solved by using z score and its formula is stated as follows.…

Q: I am being told that the sample size answer of 384 given to me was incorrect. Is there any way this…

A: 12... Margin of error =0.05 At confidence interval 95% we have to find sample size

Q: Are America's top chief executive officers (CEOs) really worth all that money? One way to answer…

A: Note “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts…

Q: The height (in feet) and trunk circumference (in inches) at breast height (4.5 feet above the…

A: The height (in feet) and trunk circumference (in inches) at breast height (4.5 feet above the…

Q: when you have means from two different samples, it is best to conduct a what test?

A: When there is mean from two different samples, two types of test can be conduced:

Q: The types of raw materials used to construct stone tools found at an archaeological site are shown…

A: a)   It is needed to test the claim that whether the regional distribution of raw materials fits the…

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: he mean GPA of all 45,038 students at Uneeda College is 3.21. A random sample of 50 GPAs from the…

A: given data  mean GPA of all 45,038 students at Uneeda College is 3.21. A random sample of 50 GPAs…

Q: IS IT REASONABLE TO ASSUME THIS SAMPLE CAME FROM A NORMAL POPULATION?

A: we need to answer, if it is reasonable to assume the given sample came from a normal population.

Q: What is the value of SS for the following sample?  1,3,2,2?

A: Given, the sample 1,3,2,2 Thus n=4 The mean of the sample is obtained as- x=1+3+2+24=84=2

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.