According to an independent research, a point estimate of the proportion of U.S.consumers of black tea is p = 0.68. Calculate the sample size needed to be 95% confident that the error in estimating the true value of p is less than 0.015? Use the z-value rounded to two decimal places to obtain the answer. n = i

Q: confidence interval for the proportion of college students who have texted during class was found to…

A: Given

Q: cupons was distributed to cyclists passing through an enterance gate. In the previous study, out of…

A:

Q: In Country​ A, the population mean height for​ 3-year-old boys is 39 inches. Suppose a random sample…

A: From the provided information, Sample size (n) = 15 Sample mean (x̄) = 38.6 Standard deviation (s) =…

Q: The probability density function of a random variable Y is given by [24y(10+2y-0.3y²) f, (y) =} ', 0…

A: Given information: a) Consider, Ey=∫010yfydy       =∫010y*24y10+2y-0.3y21000dy       =5.6…

Q: Evaluate the following formula for p, = 0.3. p, = 0.9. p, - P2 = 0, p = 0.730664. q = 0.627298, n, =…

A: We have given that, p̂1 = 0.3, p̂2 = 0.9, p1 - p2 = 0, p̄ = 0.730664,        ǭ = 0.627298, n1 = 74…

Q: i) Draw a tree diagram and the probabilities for each event involved in the above scenario. ii) Find…

A: HERE AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY PLZ REPOST FOR REMAINING  here define…

Q: John runs a computer software store. He counted 120 people who walked by his store in a day, 50 of…

A: Given total 50, only 21 bought something in the store.

Q: LO 4.3: I can construct an exponential model and represent it in a different form. Situation: With…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A basketball player keeps track of how many free throws he makes out of 5 attempts.  The following…

A: The number of attempts is 5.

Q: You are interested in finding a 95% confidence interval for the average number of days of class that…

A:

Q: (b) Let the continuous random variable X has probability density function as follows, (k(x +2)², -2…

A:

Q: Mode = 35.4 a) Find the value of Pearson's Coefficient of skewness 1 and 2. (0.19,0.58) b) Determine…

A: Given that ; Average = 64.6 Mode = 35.4 Median = 34.3 Variance = 24432.1 By using the Pearson's…

Q: Select the histogram that correctly represents the data below. Per Capita Income Country US S…

A: A histogram is a graphical repr  esentation that organizes a group of data points into…

Q: The table shows speedometer readings at 10-second intervals during a 1-minute period for a car…

A:

Q: Midterm Scores 31 34 18 33 28 33 27 26 28 27 33 26 22 21 22 27 27 19 21 33 The table above is the…

A: For the given data construct the frequency distribution table

Q: Which one of the following statements is true? 1. The slope in a regression equation tells us what…

A: Correlation is measure of strength of linear relationship bwn two variables.

Q: Part: 2 / 3 Part 3 of 3 (c) How large would the sample need to be so that a 95% confidence interval…

A: (C)  We have given that,  Population standard deviation (σ) = 7.11, confidence interval = 95% and…

Q: he five (5) rules of p

A: Probability can be defined as chance of the outcome of any random event. probability examines the…

Q: Enter the following data set Participant level hair test 1 fresh brown 55 fresh blonde 75 3 fresh…

A: Given Information: Consider the given data: Level Hair Test Fresh brown 55 Fresh blonde 75…

Q: Two universities give samples of students the same exam. School A records the follwoing sample…

A: For school A: sample statistics: x¯1=73,s1=5.5 and n1=80 For school B: sample statistics:…

Q: 8 e equation of the line of the best fit for each of the following set of numbers us dent variable.…

A:

Q: Find the indicated z score . The graph depicts the standard normal distribution with mean 0 and…

A:

Q: a researcher uses an anonymous survey to investigate the television-viewing habits of 100 American…

A: Solution-: A researcher uses an anonymous survey to investigate the television-viewing habits of 100…

Q: ected person with normal blood pressure will get a diastolic result of over 80 mmHg, indicating the…

A: Given that  X~Normal(μ=75 , σ=4.5) n=7

Q: ection: 17-1 The Wilcoxon Signed Rank Test for One Population Median Vhich of the following is not a…

A: Given that ; 10 ) Wilcoxon signed rank test concept is used here.  Note :   according to the Bartley…

Q: In a shooting game, two players shoot at a target at the same time. Suppose person A hits the target…

A: Please find the solution below. Thank you

Q: A biologist is attempting to determine the mean weight of African elephants. She conducts a sample…

A: It is given that sample mean is 8311 and the sample standard deviation is 127.

Q: A 95% confidence interval for a population proportion is calculated to be from 0.38 to 0.50.  This…

A: We have given that,  Confidence interval for population proportion (P) = 0.38 to 0.50. Then,  We…

Q: Food delivery order received by a fast food restaurant during day time follows Poisson distribution…

A:

Q: The average operating life of light bulbs produced by Company A is 8100 hours and a standard…

A:

Q: E Si(0.5)-1

A:

Q: the 2015 AFC Championship​ game, there was a charge that the New England Patriots underinflated…

A: Given that

Q: It is reported that the average American eats out at a restaurant 5.9 times per week. A random…

A: We have given that,  Population mean (u) = 5.9, population standard deviation (o) = 1.7, sample size…

Q: A government initiative is implemented to reduce the average annual out-of-pocket medical costs for…

A: We have given that  Population mean (µ) = 5340Standard deviations (σ) = 2010Sample size (n) =…

Q: A statistical program is recommended. Sherry is a production manager for a small manufacturing shop…

A: Given: Sample size n = 30 Independent variable x is 'quantity' Dependent variable y is 'total time'

Q: The following table classifies 500 people who are given the Covid-19 test by their Covid-19 test…

A: Since we know that the probability is defined as Probability = favourable outcomes/total number of…

Q: cermine the null and alternative hypothesis. A health insurer has determined that the "reasonable…

A: Given that ; μ = $ 1200 By using the hypothesis testing to solve this problem.

Q: 日周三 5. A survey of a random sample of 1,045 young adults found that 60 percent do not have a…

A: According to the given information in this question We need to identify the correct test statistic…

Q: onsider the following pairs of points for the variables X nd Y. What is the value of the correlation…

A: Given data is  x 0 1 1 2 3 4 5 6 6 7 y 6 6 7 4 5 2 3 0 1 1

Q: The extracurricular activities participated by members of the Mathematics Club at School are shown…

A:

Q: Find the critical value(s) for the t test for a left-tailed test with n=8 and a=0.05.

A: We have given that n = 8 α = 0.05 We have to find t test for a left-tailed test

Q: If Fib (17) is equal to 1597 and Fib (18) is equal to 2584, what is Fib(19)?

A: Given: Fib(17) = 1597 Fib(18) = 2584

Q: A random sample of n=102 was asked what color they most liked to wear as one question in a survey.…

A:

Q: Consider the following data and create a linear regression model: Data 1 2 3 6 Y 6 6 11 12 O…

A:

Q: A study was conducted to analyze the appearance of surgical site infections that occur in patients…

A:

Q: The time it takes for a cheese-and-ham sandwich to be toasted in the School ground floor cafeteria…

A: Given that  Sample size n =20 Sample mean =166 Sample standard deviation =22.3

Q: Drill lifetime: A sample of 50 drills had a mean lifetime of 12.54 holes drilled when drilling a…

A:

Q: A marketing researcher wants to estimate the mean amount spent ($) on a certain retail website by…

A: Given  Sample size n=94, sample mean x̄=1300, sample standard deviations s=350

Q: udying 6 4 2 arks 14 12 10 8 1. a) Can you verify the relationship betwe 2. b) Fit the regression…

A: Given,

Q: The ABC Color Paint Factory uses "agent B" in the paint manufacturing process. There is an average…

A: