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awie. w luv u, m answered 0 Question 10 v R Based on historical data, your manager believes that 42% of the company's orders come from first-time customers, A random sample of 69 orders will be used to estimate the proportion of firstrtime-customers. What is the probability that the sample proportion is between 0.24 and 0.49.7 Note: You should carefully round any names you calculate to 4 decimal places to match wamap's approach and calculations. Answer = (Enter your answer as a number accurate to 4 decimal places.) Question Help: 8 Message instructor rm 0 Question 9 v ~ A Food Marketing Institute found that 32% of households spend more than $125 a week on groceries. Assume the population proportion is 032 and a simple random sample oi 305 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is less than 0.357 There is a probability that the sample proportion oi households spending more than $125 a week is less than 0.35, Round the answer to 4 decimal places. Question Help: l3 Video E Message instructor Question 12 0/7 If 15% of adults in a certain country work from home, what is the probability that fewer than 30 out of a random sample of 250 adults will work from home? (Round your answer to 3 decimal places) Question Help: Message instructor Submit Question0 Question 8 v Suppose the true proportion of voters in the county who support a specific candidate is 0.56, Consider the sampling distribution for the proportion of supporters with sample size n : 111. a. What is the mean of this distribution? up\" : i b What is the standard error (Le. the standard deviation) of this sampling distribution, rounded to three decimal places? 01371 Question 4 A random sample of size n = 510 from a population whose parameter is p = 0.52. a. What is the mean of the distribution of sample proportions? Round the answer accurate to 2 decimal places. b. What is the standard deviation of the distribution of sample proportions? Round the answer accurate to 2 decimal places. Up=Question 3 In an effort to cut costs and improve profits, any US companies have been turning to outsourcing. In fact, according to Purchasing magazine, 54% of companies surveyed outsourced some part of their manufacturing process in the past two to three years. Suppose 555 of these companies are contacted. a. What is the probability percentage that 338 or more companies outsourced some part of their manufacturing process in the past two or three years? Round the percent to two decimal places. b. What is the probability percentage that 285 or more companies outsourced some part of their manufacturing process in the past two or three years? Round the percent to two decimal places. c. What is the probability percentage that 48% or less of these companies outsourced some part of their manufacturing process in the past two or three years? Round the percent to two decimal places.0 Question 5 v 0/7 pts 9 2 Pick the meaning of each symbol below: LL Select an answer Sample Mean D Sample Proportion p Population Mean Population Proportionl i l l .Question1 v1 According to a survey, 10% of Americans are afraid to fly. Suppose 1,100 Americans are sampled. at What is the probability percentage that 121 or more Americans in the survey are afraid to fly? Round the percent to two decimal places. C 7 b. What is the probability percentage that 165 or more Americans in the survey are afraid to fly? Round the percent to two decimal places. [ c. What is the probability percentage that 8% or less of theAmericans surveyedinswered they were afraid to fly? Round the percent to two decimal places MATH1127: Introduction to Statistics (Asynchronous (100% Online)) 20365 ... Lesson 7.6 The Central Limit Theorem for Proportions Unit 3 Chapter 7: Lesson 7.6 Assignment In an certain species of newt, offspring are born either green or black. Suppose that 65% of these newts are born green. If we sample 91 of these newts at random, the probability distribution for the proportion of green newts in the sample can be modeled by the normal distibution pictured below. Complete the boxes accurate to two decimal places . Note: The left box is 2 standard deviations below the mean. The middle box is the mean. And, the right box is 2 standard deviations above the mean.0 Question 11 v 1: [3 0/ According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 132 grocery shoppers to investigate their behaviorl What is the probability that the sample proportion does not exceed 0.08.7 Note: You should carefully round any names you calculate to 4 decimal places to match warnap's approach and calculations. Answer = ' (Enter your answer as a number accurate to 4 decimal places.) Question Help: 8 Message instructor Progress Question 6 Suppose that the efficacy of a certain drug is 0.4. Consider the sampling distribution (sample size n = 150 ) for the proportion of patients cured by this drug. a. What is the mean of this distribution? b. What is the standard error of this distribution? Round the answer to three decimal places.0 Question 2 v k [30/7 [115 0 2 2 Suppose the true proportion of voters m the county who support a new fire district is 0.55. Consider the samphng distribution for the proportion of supporters with sample size n : 118. What is the mean of this distribution? i What is the standard error of this distribution? ' Question Help: 8 Message instructor Submit