please help with the question below

Awards & Disbursements - Acc X * Course Hero X Gradebook Connect X + X A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253 70% . .. V E Wk 3 - Practice: Wk 3 Exercise [due Day 5] @ Sover Help Save & Exit Submit Check my work 6 (a) A poll of 2,277 likely voters was conducted on the president's performance. Approximately what margin of error would the approval rating estimate have If the confidence level is 95%? (Round your answer to 4 decimal places.) 2 Margin of error points Skipped (b) The poll showed that 44% approved the president's performance. Construct a 90% confidence Interval for the true proportion. (Round your answer to 4 decimal places.) The 90% confidence Interval is from to Book (c) Would you agree that the percentage of all voters who approve of the president's performance could be 50%? Yes, the confidence Interval contains .50. References O No, the confidence Interval does not contain .50. Mc Fraw I'm Cortana. Ask me anything. W (?) 4:43 PM 9/12/2020Awards & Disbursements - Acc X * Course Hero X Gradebook Connect X + X -CA A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253 70% . .. V E Wk 3 - Practice: Wk 3 Exercise [due Day 5] @ Sover Help Save & Exit Submit Check my work A random sample of 21 lunch orders at Noodles & Company showed a mean bill of $13.54 with a standard deviation of $6.45. Find the 98 percent confidence Interval for the mean bill of all lunch orders. (Round your answers to 4 decimal places.) 2 The 98% confidence Interval is from to points Skipped Book References Mc Fraw I'm Cortana. Ask me anything. W (?) 4:44 PM 9/12/2020Awards & Disbursements - Acc X * Course Hero X Gradebook Connect X + X A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253 70% . .. V E Wk 3 - Practice: Wk 3 Exercise [due Day 5] @ Sover Help Save & Exit Submit Check my work 8 if the weight (In grams) of cereal in a box of Lucky Charms Is /476.6). what is the probability that the box will contain less than the advertised weight of 454 9? Note. You may need to use Excel to calculate the exact probabilities. (Round your answer to 5 decimal places.) 2 points Probability Skipped Book References Mc Fraw I'm Cortana. Ask me anything. W (?) 4:44 PM 9/12/2020Awards & Disbursements - Acc X * Course Hero X Gradebook Connect X + X -CA A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https 70% . .. V E Wk 3 - Practice: Wk 3 Exercise [due Day 5] @ Sover Help Save & Exit Submit Check my work 9 Shower temperature at the Oxnard Health Club showers is regulated automatically. The heater kicks In when the temperature falls to 98"F and shuts off when the temperature reaches 108*F. Water temperature then falls slowly until the heater kicks In again. At a given moment, the water temperature is a uniformly distributed random variable ((98.108). 2 points (a) Find the mean temperature. (Round your answer to 1 decimal place.) Skipped Mean |degrees (b) Find the standard deviation of the temperature. (Round your answer to 4 decimal places.) Book Standard deviation degrees (c) Find the 75th percentile for water temperature. (Round your answer to 2 decimal places.) References 75th percentile degrees Mc Fraw I'm Cortana. Ask me anything. W (?) 4:44 PM 9/12/2020Awards & Disbursements - Acc X * Course Hero X Gradebook Connect X + X -CA A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https 70% . .. V E Wk 3 - Practice: Wk 3 Exercise [due Day 5] @ Sover Help Save & Exit Submit Check my work 11 In Northern Yellowstone Lake. earthquakes occur at a mean rate of 1.2 quakes per year. Let X be the number of quakes In a given year. (a) Justify the use of the Poisson model. 2 points Earthquakes occur at regular Intervals. Skipped O Earthquakes are not Independent events. Earthquakes are random and Independent events. Book (b) What is the probability of fewer than three quakes? (Round your answer to 4 decimal places.) References Probability (c) What is the probability of more than five quakes? (Round your answer to 4 decimal places.) Probability Mc Fraw I'm Cortana. Ask me anything. W ? 4:44 PM 9/12/2020