The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95​% confident that his estimate is within five percentage points of the true population​ percentage? n=?

Q: nd believes that the number ne caregi Page ome data is provided below: 1 s the score Jords Per Day…

A: According to the  sum, x=17422,sx=3506.492 and y=85 sy=7.176 The correlation between words per day…

Q: ) Danny has scored 78, 74, and 72 on the first three exams in his math class. If the standard…

A: Calculate total marks obtained in 3 exam

Q: Use the following scores to find the value of EX-2 = 3 4 2

A: GivenX=3,2,4,2

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

A:

Q: In what percent of their games would you expect the Dodgers to score more than 7.31 runs?

A: Given: Distribution of games is symmetric, unimodal and bell-shaped.

Q: The teacher let the students make up some of their work, so that now 86 students are passing out of…

A: The sample proportion/point estimate of the sample of size n can be defined as: p^=xn  Here, x =…

Q: The U.S. Air Force requires that pilots have heights between 64in and 77in. The heights of women are…

A: Obtain the percentage of woman meeting the height requirement. The percentage of woman meeting the…

Q: Find the n amount, given that with a 95 percent confidence the error is by three percentage points…

A: Formula : Margin of error: ME=Zα/2 * √p̂(1-p̂)/n

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: In the year 2020, City A had a population of 200,000. 300 existing cases of colon cancer were…

A: GivenThe population of City A =200000The existing cases of Colon Cancer =300The number of cases…

Q: In a study of over 15,000 teens, 62% of boys and 55% of girls consumed sugar-sweetened soda on the…

A:

Q: What percent of scores are below a T score of 56?

A: Given, T score is 56. Now,

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Given information- Margin of error, E = 7% = 0.07 Confidence level, c = 80% Since nothing is known…

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: The nightshift workers in 3 of Super Bo’s specialty stores stock about 500 (SD = 12.56) products in…

A: Let μ be the population mean. The hypothesis is, Null hypothesis: H0:μ=496 Alternative hypothesis:…

Q: Angela took a general aptitude test and scored in the 86th percentile for aptitude in accounting.…

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

Q: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. How…

A: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. It is…

Q: A researcher wishes to estimate the proportion of corporate executives whose annual salary is over…

A:

Q: Kevin scored at the 60th percentile on a test given to 9780 students. How many students scored lower…

A: Given that the percentile of Kevin is 60.This means 60% of the students will have score lower than…

Q: A proportion .40 of the tagged birds were recovered. 150 were tagged in all. How many were…

A:

Q: Complete the following statements: 1. In general, _________% of the values in a data set lie at or…

A: Solution : Definition of percentile - The percentile indicates the values below which given…

Q: When designing a study to determine this population proportion, what is the minimum number of…

A: Solution: From the given information, confidence level is 0.95 and E=0.02.

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: A student has scores of 72%, 74%, and 78% on three exams. What percent score does he need on the…

A: Here we solve the inequality for x . x= score for the fourth exam.

Q: Use the following scores to find the value of Ex= 3 4 2. 2.

A: Given: x 3 2 4 2

Q: On a reading test, Shaylen's score of 455 was higher than the scores of 4236 of the 7276 students…

A: The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Obtain the critical value at 95% confidence level:It is given that the confidence level is 0.95 and…

Q: Angela took a general aptitude test and scored in the 83rd percentile for aptitude in accounting.…

A: Solution: From the given information, Angela scored in the 83rd percentile for aptitude in…

Q: The manager of an orchard expects about 82 percent of her apples to exceed the weight requirements…

A:

Q: In a normal distribution of pain estimates (0 = no pain, 100 = lots of pain) where μ = 25 and σ =…

A: The given information is that the normal distribution of pain estimates with mean 25 and standard…

Q: If you double the sample size in a poll, what effect does that have on the margin of error? By what…

A: The margin of error can be calculated in two ways, depending on whether you have parameters from a…

Q: A typical middle-income household in 1980 earned $30,983. A similar household in 2009 earned…

A:

Q: In a random sample of college freshmen, the proportion who use text messaging daily was 0.93. In a…

A: Given, In a random sample of college freshmen, the proportion who use text messaging daily was 0.93…

Q: In many states, a 17% risk of a car accident with a blood alcohol concentration of 0.08 is the…

A: Since, it is given that in many states, a 17% risk of a car accident with ablood alcohol…

Q: Sarah works for the Urban Pollination Project at UW. Five years ago, 25% of urban gardens were…

A: From the provided information, 25% of urban gardens were visited by native bees that is p = 0.25 The…

Q: the brand manager for a toothpaste brand must plan a campaign designed to increase brand…

A: The error is ±1.96×p1-pn=0.05assume p=0.5. This will give the most conservative estimate square on…

Q: In a class of 80 students, Heather has a rank of 16. At what percentile is she? Heather has a…

A: Heather has rank 16 in a class of 80 students. The number of students having rank after Heather is,…

Q: Paradise Resort has a total of 350 lounge chairs. If 210 chairs are under umbrellas, what percent of…

A:

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: A typical middle-income household in 1980 earned $38,405. A similar household in 2009 earned…

A:

Q: The percentage of scores falling below a z-score of .65

A:

Q: 2. On a reading test, Amelia's score of 455 was higher than the scores of 4256 of the 7210 students…

A: Obtain the percentile for the Amelia’s score. The percentile for the Amelia’s score is obtained…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A:

Q: For a number X, 40% of X is what percentage of 60% of X?

A:

Q: Angela took a general aptitude test and scored in the 85th percentile for aptitude in accounting.…

A: Given, Angela scored 85th percentle. 85th percentile means there is 85% scores below the score and…

Q: One researcher wants to estimate the proportion of MU students who are vegetarian, 6 answered "yes".…

A:

Q: You would like to be 99.9 confident that your estimate is within 2% of the true population…

A:

Q: A business department is trying to determine if their program is competitive. They survey recent…

A: Given information: The MINITAB output results for the one-same t test is given.

Q: A recent study in 2013 conducted in Canada showed that house values were reduced in value by an…

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.