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 80% confident that his estimate is within six percentage points of true population percentage? Complete parts (a) through (c) below. A.) assume that nothing is known about the percentage of adults who have heard of the brand. B.) assume that a recent surgery suggest that about 76% of adults have heard of the brand.

Q: A statistics instructor asks each student in his classes to report how much the student spent on…

A: Data given  X:405,385,495,385,555,470

Q: To the right are GPA's of 60 students. Answer the following questions regarding this data. Be…

A: (A) Using the provided box plot based on the GPA scores, the five-point summary for the male…

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…

A:

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

A: (c) Option A: No, a sample of students at the nearest college is a convenience sample, not a simple…

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

A: Step 1: Step 2:

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: calculate the Sd.

A: GivenFreshmanSophomore68.568.362.756.756.362.56162.562.861.15259.65661.362.561.553.955.857.358.6

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

A: Step 1:We use the formula for the margin of error for the population proportion p to derive the…

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: To describe the data, start by answering the following: How many elements are there in the data set?…

A: 1.A dataset given: 2. There are 100 Elements in the dataset. They are Customers 1,2,3,4,...,100. 3.…

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

A: Given, Confidence level, C = 95% = 0.95So, level of significance, α = 1-0.95 = 0.05Margin of error,…

Q: The data to the right represent the cost of living for 20 states. The cost of living average price…

A: The data to the right represent the cost of living for 20 states. The cost of living is a measure of…

Q: Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly…

A: Solution: It is given that Jennifer wants to estimate the percentage of parents that use cloth…

Q: Movie companies need to predict the gross receipts of individual movies after a movie has debuted.…

A: Use EXCEL to obtain the value covariance between First weekend gross and national gross.   EXCEL…

Q: A statistics instructor asks each student in his classes to report how much the student spent on…

A: Excel function to find population variance is as follows,   =VAR.P( number1, number2 .............)…

Q: How many males were surveyed?

A: It is given that Total = 516 Number of females = 259 Number of males = 257

Q: he brand manager for a brand of toothpaste must plan a companion to increase brand recognition. He…

A: Given Information: Confidence level = 95% = 0.95 Significance level α=1-0.95=0.05 Margin of Error…

Q: An automobile club reported that the average price of regular gasoline in a certain state was $2.62…

A: Data2.662.632.742.552.582.662.712.742.732.562.522.732.612.582.71

Q: The data provided is from houses for sale in Salinas. Prices are in the $1,000. South Salinas Price…

A: Given information: South Salinas   North Salinas Price Square Feet Bedrooms   Price Square Feet…

Q: Use the frequency histogram to complete the following parts. (a) Determine the number of classes.…

A:

Q: For a z-score of Z = -2.2, give the proportion in the body (hint: use the z-table), and state…

A:

Q: he instructor takes a random sample of size from the population data and obtains the following…

A: Given data is 405, 385 , 495, 385, 555, 470sample size(n)=6sample…

Q: A. The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are…

A: The linear regression equation is of form y=β0+β1x Follow the steps below to get the Regression…

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

A: Here given that confidence interval = 95%Margin of error = 5% = 0.05assuming sample is large enough…

Q: A national survey of graduate students is conducted to assess their consumption of coffee. The…

A: The total number of graduate students is, 145+80+94+121+365+430=1235.

Q: 3) The Tire Rack, an online distributor of tires and wheels, conducts extensive testing to provide…

A: The level of significance is α=0.01. Given data: Tread Wear Dry Traction Steering Buy Again 8.6…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.