Suppose the true proportion of voters in the county who support a school levy is 0.53. Consider the sampling distribution for the proportion of supporters with sample size n = 167. What is the mean of this distribution? :] What is the standard deviation of this distribution? Round to 4 decimal places. Question Help: D Post to forum Submit Question A Food Marketing Institute found that 34% of households spend more than $125 a week on groceries. Assume the population proportion is 0.34 and a simple random sample of 148 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is between 0.27 and 0.38? Answer = I: (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question Based on historical data, your manager believes that 35% of the company's orders come from first-time customers. A random sample of 114 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is less than 0.27? Answer = C] (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample of 172 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is less than 0.29? Answer = C] (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question Based on historical data, your manager believes that 27% of the company's orders come from first-time customers. A random sample of 95 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is greater than than 0.15? Answer = C] (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample of 219 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.29 and 0.43? Answer = C] (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question According to a 2009 Reader's Digest article, people throw away approximately 14% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 170 grocery shoppers to investigate their behavior. What is the probability that the sample proportion exceeds 0.1? Answer = [3 (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit Question A Food Marketing Institute found that 28% of households spend more than $125 a week on groceries. Assume the population proportion is 0.28 and a simple random sample of 307 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 0.26? Answer = I: (Enter your answer as a number accurate to 4 decimal places.) Question Help: D Post to forum Submit
