A large mall conducted a survey to estimate how much money people planned to spend during the Christmas season. The survey included 5 questions asked of randomly selected shoppers between 10 AM and 4 PM on a weekday during the month of August. The survey estimate of $250 per shopper was much lower than the actual average of $400 spent per shopper from the previous Christmas season. Do you think this result reliably indicates that sales will be lower for the upcoming Christmas? Can you identify any other reason the $250 average is so far below the previous $400 figure?

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: Using a random sample of 3800 TV households, a media research company found that 50.3% watched the…

A:

Q: physicians

A: Number of success = x= 3145 n=5804

Q: Step 1 of 2: Suppose a sample of 726 suspected criminals is drawn. Of these people, 232 were…

A: Let p be the population proportion of people who were captured.Given that,No. of suspected…

Q: What is the range of the middle 50% of the data? The five number summary for the average annual…

A:

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: In a survey, 15 people were asked how much they spent on their child's last birthday gift. The…

A: Given: n=15,σ=$10,α=1-0.9=0.1

Q: 3. In a Gallup Pool, 52% of 1038 surveyed adults said that second hand smoke is "very harmful". What…

A: Following information is given:   Total number of people survey = 1038 Percentage of people who said…

Q: It is costly in both time and money to go to college. Does it pay off? According to the Bureau of…

A: The bar graph can be constructed using Excel as: Open MS Excel sheet Enter the data in first two…

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: Assume that a recent survey suggests that about 79​% of adults have heard of the brand.   n=

A: It is given that a recent survey suggests that about 79​% of adults have heard of the brand.

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given that Number of sample =306 Number of captured=100 We have to find the proportion of people who…

Q: According to the results of a survey,  32%  of  102  people indicated that American football is…

A: Consider the level of significance as 0.05. Computation of critical value:…

Q: A poll was conducted on a representative sample of 600 adults living in the United States in order…

A: A poll was conducted on a representative sample of 600 adults living in the United States in order…

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: According to recent data, 33% of people are left handed. In a sample of 200 people, how many would…

A: Answer: From the given data, Let X: Left handed people Sample size (n) = 200 P(left handed people) =…

Q: The US Bureau of Labor Statistics states that the median income of a data scientist in 2022 $103,500…

A: As per the US Bureau of Labor Statistics, a data scientist's median income in  per year.

Q: Suppose that the results of a survey show that 59% of people consider summer as their favorite…

A: Given information: The proportion of people consider summer as their favorite season is 59%. The…

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

Q: 25% of pitchers are left-handed. a survey of 80 pitchers showed 27 are left-handed. find the point…

A: Solution:Point estimate: The population parameter which is estimated by using sample statistic is…

Q: Suppose that the results of a survey show that 38% of people consider summer as their favorite…

A: Given that p =0.38,Margin of error (E ) = 0.04 n =?

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

A:

Q: At the local college, a study found that students earned an average of 8.5 credit hours per…

A: Given, the average credit hour per semester is 8.5. The sample size is 127 students.

Q: "Save today by switching to SOAR!" is the slogan for SOAR, a cell phone service provider. Logan…

A: Farmula used Standard error=σ/√n Given  n=75, x̄=sample mean=$19.03, standard deviations=σ=$4.71

Q: Suppose that the results of a survey show that  24%  of people consider summer as their favorite…

A: Solution: From the given information, p=0.24 and E=0.02.

Q: An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars…

A: The given data is as follows:Sample size, 363 of them preferred foreign over domestic cars

Q: Cricket’s is a popular club for students from the nearby college. The club had 840 customers during…

A:

Q: Many say that baseball, which is commonly called America's National pastime, is a game with a low…

A: 1. The formula for probability is P= Number of successes(outcomes in fever) total number of outcomes…

Q: It is costly in both time and money to go to college. Does it pay off? According to the Bureau of…

A: Use barplot() command in R software to draw bar chart.

Q: d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where…

A: Solution:  Given information: n= 42  Sample size  MSE= 0.3473  Mean square  error  The degree of…

Q: According to recent data, 12 percent of people are left handed. In a sample of 20 people, how many…

A: Answer: Using the given data, Let X denotes the number of people who are left handed P(left handed)…

Q: A software company is interested in improving customer satisfaction rate from the 54% currently…

A: Let p be the population proportion of customer satisfaction rate.Given that,Population proportion…

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: If a person is making the median salary for a CPA, they are making less than or equal to (ANSWER) %…

A: Boxplot gives information about spread of data; it gives idea about symmetry of data around the…

Q: City crimes records show that 20% of all crimes are violent and 80% are nonviolent. Ninety percent…

A: Given that, city crimes record shows that 20% of all crimes are violent and 80% are non violent.…

Q: Suppose that I want to estimate the percentage of students who  love statistics in California. How…

A: Given information- Margin of error, E = 3% = 0.03 Confidence level, c = 90% Since nothing is known…

Q: A software company is interested in improving customer satisfaction rate from the 74% currently…

A:

Q: The Consumer Reports National Research Center conducted a telephone survey of 2000adults to learn…

A: We are given the results as follows: Let us denote x as the number of adults who think the future…

Q: A survey of 500 citizens of a large country revealed that 70 of them believe the government's…

A: Solution : Given that : A survey of 500 citizens of a large country revealed that 70 of them believe…