A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 respondents, 11% chose chocolate pie, and the margin of error was given as +3 percentage points. Describe what is meant by the statement that "the margin of error was given as +3 percentage points." Choose the correct answer below. O A. The statement indicates that the study is 100% - 3% = 97% confident that the true population percentage of people that prefer chocolate pie is 11%. O B. The statement indicates that the interval 11% ± 3% is likely to contain the true population percentage of people that prefer chocolate pie. Oc. The statement indicates that the study is only 3% confident that the true population percentage of people that prefer chocolate pie is exactly 11%. O D. The statement indicates that the true population percentage of people that prefer chocolate pie is in the interval 11% t 3%.

Q: A survey of 62 men found that 12 have a social media account. Another survey of 57 women found that…

A: Men are taken as group 1. Women are taken as group 2.   Given: n1=62x1=12n2=57x2=40α=0.07

Q: How large a sample should be surveyed to estimate the true proportion of college students who surf…

A:

Q: A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $643.…

A: W heaven to find asked percentage from given data.

Q: A cohort study examined the association between smoking and lung cancer after following 400 smokers…

A: RR = Risk of disease in (Group1)Risk of disease in (Group2)

Q: The executives at Sandbachian, inc., having recently solved their widget crisis, have another…

A: Let ‘x’ be the no of defective manhole covers i.e x=40 and n=800 sample propotion (P)=x/n p=40/800…

Q: (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how…

A: mu = 19.9 s = 5.1

Q: You are running a political campaign and wish to estimate, with 95% confidence, the proportion of…

A: Formula for the sample size needed to estimate a population proportion is

Q: A sample selected from a population gave a sample proportion equal to 0.60.

A:

Q: A recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $637.…

A:

Q: You take a random sample of size 25 students and find the 5 who understand this lecture. With 99%…

A:

Q: A finance blogger is writing an article about credit card use. As they write their article, the…

A: If P-value ≤ α, reject H0. If P-value > α, do not reject H0.

Q: A random sample of 324 residents of a community revealed that 30% were very satisfied withthe…

A: Given that, Critical values: By using the standard normal table of Z, the critical value for two…

Q: A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a…

A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: A recent survey found that 58% of U.S. adults use their smartphones to research and shop for…

A: The expression is  The margin of error is given as 5.3%.

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: What percentage of scores would be above 567?

A:

Q: i) Test, at the 3% level of significance, whether the proportion of adults who experience an adverse…

A: For sample 1, we have that the sample size is N1= 733 the number of favourable cases is X1= 103, so…

Q: A research report from an independent-measures study states that there are significant differences…

A: From the provided data we have, Degrees of freedom between group = k-1 = 2  Thus, k = 3 Degrees of…

Q: Will, an art student, randomly sampled oil paintings in a museum. He wanted to find out how many oil…

A: Given :  Margin of Error  (E) = 0.02 The proportion of paintings that were created using the color…

Q: A company wants to know the proportion of consumers willing to buy their product. How many people…

A: Given that ME=margin of error=1.5%=0.015z=critical value off 90% confidence…

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: A recent study by the u.s. census bureau determined that the median monthly housing rent was $641.…

A: The median is middle value of the observations, above or below which 50% of the observations lie.…

Q: Twenty years ago, 46% of parents of children in high school felt it was a serious problem that high…

A:

Q: A medical researcher wants to do a study on the proportion of knee replacement surgeries that result…

A:

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: Is steak your favorite barbeque food? July is National Grilling Month in the United States. A Harris…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: Solution

Q: In each of Exercises, explain the effect on the margin of error and hence the effect on the accuracy…

A: Formula for the margin of error is given by

Q: In a sample of 81 elements, the mean was 60 and the variance was 144. What is the standard error for…

A:

Q: a pollster plans to improve survey results by only conducting polls in which the margin of error is…

A:

Q: Does it make sense ? Why or why not? A pollster plans to improve survey results by only conducting…

A: A pollster plans to improve survey results by conducting polls in which the margin of error is zero.

Q: A fast-food restaurant manager believes that 27% of customers who order Double Whopper Cheeseburgers…

A: The random variable X follows normal distribution. We have to find the test statistic. This is…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, above what…

A: Solution:From the given information, the proportion of African American is 0.13, random sample of…

Q: According to a U.S. news poll, 38% of students in the class of 2013 had done an internship during…

A: We have  to find correct answer...

Q: The proportion of people that own cats is 80%. A veterinarian believes that this proportion is…

A: Given that, Sample size n=200 Population proportion p=0.80 Sample proportion of people who owned…

Q: The results of a nationwide aptitude test in Mathematics are normally distributed with μ=80 and…

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The value of p0 is 0.52 and the sample size n is 800.

Q: A research report from an independent-measures study states that there are significant differences…

A: The degrees of freedoms are 2 and 36.

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: If a newborn lab rat receives a hormone and its weight (in ounces) is converted into a z score that…

A: The standard normal variable is z, which follows the normal distribution with the mean of 0 and…

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 Verizon researcher compared the number of text messages sent by a sample of teenage boys to the…

A: a) In this case, the Verizon researcher compared the number of text messages sent by a sample of…

Q: If a person’s z score equals 1.61, what percentage of the observations are more extreme?

A:

Q: A researcher uses a repeated-measures design to compare individuals’ performance before treatment…

A:

Q: According to the Humane Society, 33% of households in the United States own at least one cat. You…

A: From the given information p Value is 0.092. We want to interpret it.

Q: Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease…

A: According to the provided information, n=153x=32p=xn=32153=0.209

Q: How could the survey question "Have you ever had a drink of alcohol?" be revised to obtain a valid…

A: Introduction :- We are given one survey question. We have to revise these questions to obtain valid…

Q: If the proportion of Hs is .45 out of 50 flips, what is the p-value? Round to three places.

A: We have given that Sample proportion =0.45 Sample size (n)=50 flips  Population proportion p=0.5…

Q: A polling company reported that 59% of 1013 surveyed adults said that rising gas prices

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Q: If the proportion of Hs is .25 out of 200 flips, what is the p-value? Round

A: Here proportion of head in fair coin should be 0.5 So take hypothesis with proportion p is 0.5 or…

Q: A random sample of 40 students from each grade level was surveyed regarding their preference for a…

A: I have given an answer in step 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.