D. Construct a 95% confidence interval estimate of the proportion of adults believing that immediate government action s required.
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- You recently sent out a survey to determine if the percentage of adults who use social media has changed from 56%, which was the percentage of adults who used social media five years ago. Of the 2703 people who responded to survey, 1758 stated that they currently use social media.a) Use the data from this survey to construct a 92% confidence interval estimate of the proportion of adults who use social media. Record the result below in the form of (#,#)(#,#). Round your final answer to four decimal places.b) Can you conclude that the percentage of adults who use social media has changed? Explain. Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval. Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval. No, because the proportion of adults who used social media five years ago is inside the confidence interval. No, because the proportion of adults who used social media…Which estimate at a 95% confidence level most likely comes from a small sample? OA. 78% (14%) OB. 93% (18%) OC. 87% (16%) D. 82% (124%) O OIf n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p.Give your answers to three decimals < p <
- In a survey of 1036 adults, a poll asked, "Are you worried or not worried about having enough money for retirement?" Of the 1036 surveyed, 649 stated that they were worried about having enough money for retirement. Construct a 99% confidence interval for the proportion of adults who are worried about having enough money for retirement A 99% confidence interval for the proportion of adults who are worried about having enough money for retirement is ( D. (Use ascending order. Round to four decimal places as needed.)Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant. There data are contained in the file Houston. Based upon past studies the population standard deviation is known to be ??=$6. You are to estimate the average amount spent by a customer at the restaurant. a) Find the margin of error associated with a 95% confidence level. b) Report the 95% confidence interval for the mean. c) Find the margin of error associated with a 99% confidence level. d) Report the 99% confidence interval for the mean. e) Describe the change in the width of the confidence interval as confidence interval increases from 95% to 99%. Pleaseh help with A-C; Data: 20.50 14.63 23.77 29.96 29.49 32.70 9.20 20.89 28.87 15.78 18.16 12.16 11.22 16.43 17.66 9.59 18.89 19.88 23.11 20.11 20.34 20.08 30.36 21.79 21.18 19.22 34.13 27.49 36.55 18.37 32.27 12.63 25.53 27.71 33.81 21.79 19.16 26.35 20.01…c. The proportion of buyers who actually make a purchase appears to be relatively constant over time. In 2015, among a sample of 389 on-line buyers, 159 purchased merchandise. In 2019, for a sample of 301 on-line buyers, 138 purchased merchandise. At the .05 level of significance, did the proportion of on-line buyers change from 2015 to 2019?
- Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in 2021. Use a 90% Confidence Level to find a Confidence Interval for the proportion of all Miami residents who will donate blood in 2021? The decimals in your answer must be rounded to three decimal places. O A. (0.167, 0.193) O B. (0.186, 0.201) O C. (0.164, 0.196) O D. (0.192, 0.211)Express the confidence interval (13.8 %, 20 %) in the form of p ± E. % ± %You recently sent out a survey to determine if the percentage of adults who use social media has changed from 62%, which was the percentage of adults who used social media five years ago. Of the 2751 people who responded to survey, 1740 stated that they currently use social media.a) Use the data from this survey to construct a 98% confidence interval estimate of the proportion of adults who use social media. Record the result below in the form of (#,#)(#,#). Round your final answer to four decimal places.b) Can you conclude that the percentage of adults who use social media has changed? Explain. Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval. Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval. No, because the proportion of adults who used social media five years ago is inside the confidence interval. No, because the proportion of adults who used social media…
- d) Construct a 90% confidence interval for Hcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you begin in community college. The confidence interval is the range from to (Round to three decimal places as needed.)When a population has less variability, for the same margin of error and confidence level, the confidence interval becomes a. larger b. smaller c. of unchanged sizeYou recently sent out a survey to determine if the percentage of adults who use social media has changed from 56%, which was the percentage of adults who used social media five years ago. Of the 2335 people who responded to survey, 1725 stated that they currently use social media.a) Use the data from this survey to construct a 93% confidence interval estimate of the proportion of adults who use social media. Record the result below in the form of (#,#)(#,#). Round your final answer to four decimal places.