6) Use a graphing utility and augmented matrix methods to solve the system: 1.8x1 – 12.17x2 = 33 -3.75x1 + 5.73x2 = 7 Express your answer accurate to three decimal places.
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- The Transform 66 Outside the Beltway project, scheduled to be completed late 2022, is an expansion of the current highway that will provide new travel choices for drivers and hopefully congestion relief from the Capital Beltway (I-495) to Gainesville for a 22.5 mile stretch. This 22.5 mile stretch of I-66 will go through both Fairfax County and Prince William County. VDOT had team members from the project reach out through a phone survey for a random selection of 3,500 residents from both Fairfax County and Prince William County. One question asked on the survey was “Do you feel that the new I-66 Express Lanes will bring congestion relief?” Of the Fairfax County residents surveyed, 1,642 agreed they thought that the expansion will bring congestion relief while only 1,576 of the Prince William County residents surveyed agreed with the statement. p1: proportion of successes for population 1p2: proportion of successes for population 2p1 - p2 : Difference in proportions95% confidence…The Transform 66 Outside the Beltway project, scheduled to be completed late 2022, is an expansion of the current highway that will provide new travel choices for drivers and hopefully congestion relief from the Capital Beltway (I-495) to Gainesville for a 22.5 mile stretch. This 22.5 mile stretch of I-66 will go through both Fairfax County and Prince William County. VDOT had team members from the project reach out through a phone survey for a random selection of 3,500 residents from both Fairfax County and Prince William County. One question asked on the survey was “Do you feel that the new I-66 Express Lanes will bring congestion relief?” Of the Fairfax County residents surveyed, 1,642 agreed they thought that the expansion will bring congestion relief while only 1,576 of the Prince William County residents surveyed agreed with the statement 1) Calculate and label the two sample proportions separately and round the values to four decimal places. Next, calculate the difference between…According to a los angeles times study of more than 1 million medical dispatches from2007 to 2012, the 911 response time for medical aid varies dramatically across LosAngeles (la times website, November 2012). Under national standards adopted by theLos Angeles Fire Department, rescuers are supposed to arrive within six minutes to almostall medical emergencies. But the times analysis found that in affluent hillside communities stretching from griffith Park to Pacific Palisades, firefighters failed to hit that marknearly 85% of the time.The following data show the response times, in minutes, for 10 emergency calls in thegriffith Park neighborhood.11.8 10.3 10.7 10.6 11.5 8.3 10.5 10.9 10.7 11.2Based on this sample of ten response times, compute the descriptive statistics in parts (a)and (b) and then answer the questions in parts (c) and (d):a. Mean, median, and modeb. Range and standard deviationc. Should the response time of 8.3 minutes be considered an outlier in comparison to theother…
- According to a los angeles times study of more than 1 million medical dispatches from2007 to 2012, the 911 response time for medical aid varies dramatically across LosAngeles (la times website, November 2012). Under national standards adopted by theLos Angeles Fire Department, rescuers are supposed to arrive within six minutes to almostall medical emergencies. But the times analysis found that in affluent hillside communities stretching from griffith Park to Pacific Palisades, firefighters failed to hit that marknearly 85% of the time.The following data show the response times, in minutes, for 10 emergency calls in thegriffith Park neighborhood.11.8 10.3 10.7 10.6 11.5 8.3 10.5 10.9 10.7 11.2Based on this sample of ten response times, compute the descriptive statistics in parts (a)and (b) and then answer the questions in parts (c) and (d):a. Mean, median, and modeb. Range and standard deviationAccording to a los angeles times study of more than 1 million medical dispatches from2007 to 2012, the 911 response time for medical aid varies dramatically across LosAngeles (la times website, November 2012). Under national standards adopted by theLos Angeles Fire Department, rescuers are supposed to arrive within six minutes to almostall medical emergencies. But the times analysis found that in affluent hillside communities stretching from griffith Park to Pacific Palisades, firefighters failed to hit that marknearly 85% of the time.The following data show the response times, in minutes, for 10 emergency calls in thegriffith Park neighborhood.11.8 10.3 10.7 10.6 11.5 8.3 10.5 10.9 10.7 11.2Based on this sample of ten response times, compute the descriptive statistics in parts (a)and (b) and then answer the questions in parts (c) and (d):a. Mean, median, and modeAccording to a los angeles times study of more than 1 million medical dispatches from2007 to 2012, the 911 response time for medical aid varies dramatically across LosAngeles (la times website, November 2012). Under national standards adopted by theLos Angeles Fire Department, rescuers are supposed to arrive within six minutes to almostall medical emergencies. But the times analysis found that in affluent hillside communities stretching from griffith Park to Pacific Palisades, firefighters failed to hit that marknearly 85% of the time.The following data show the response times, in minutes, for 10 emergency calls in thegriffith Park neighborhood.11.8 10.3 10.7 10.6 11.5 8.3 10.5 10.9 10.7 11.2Based on this sample of ten response times, compute the descriptive statistics in parts (a)and (b) and then answer the questions in parts (c) and (d):a. Mean, median, and modeb. Range and standard deviationc. Should the response time of 8.3 minutes be considered an outlier in comparison to theother…
- A study at UNG divided female graduate students into three groups and had the students perform as many push ups as possible in 60 seconds. The first group was told nothing, the second group was told to “Try as many as possible,” while the third group was told to try and increase their number each day by 5%. After a week, the number of push ups completed by each group was recorded. This is an example of an ____________________ study. Experimental or ObservationalThe probability that each block fails to function is as shown. Assuming independence of failure for the numerous blocks, what is the probability that the system works?In February 2021, the Chicago Tribune reported:“The overdose epidemic that has ravaged Chicago has not spared the nearby suburbs, some of which have death rates comparable to anything seen in the city, according to a report released this week by the Cook County Department of Public Health. ZIP codes in the towns of Worth, Broadview, Maywood, and Forest Park, areas that “have substantially lower median household incomes and higher poverty rates,” have been especially hard-hit, the report said.”In the article, they claimed that lower incomes were associated with higher overdose death rates and that overdose death rates are increasing over time. The data you have been analyzing wasn’t focused on Chicago, obviously. But do your results support the general gist of the statistical argument being made in this Tribune excerpt? Please address:• Do overdose death rates appear to be associated with per capita income (use scatterplot)?• Do overdose death rates appear to be increasing over time…
- Suppose that the link speed is 8 Mbps, the demand bandwidth of each active user is 1000Kbps. The active probability of each user is 10%. How much user can support under the block probability is less than 0.008?Pigmented makeup products like mascara and eye shadow may contain metal (e.g., nickel) allergens. Is a nickel allergy more likely to occur in women who report cosmetic dermatitis from using eye shadow or mascara? In a sample of 123 women with cosmetic dermatitis from using eye shadow, 12 were diagnosed with a nickel allergy. In a sample of 261 women with cosmetic dermatitis from using mascara, 27 were diagnosed with a nickel allergy. Use this information to complete parts a through c below. a. Compute a 95% confidence interval for the proportion of women with cosmetic dermatitis from using eye shadow who have a nickel allergy. b. Compute a 95% confidence interval for the proportion of women with cosmetic dermatitis from using mascara who have a nickel allergy. c. Suppose you are informed that the true proportion with a nickel allergy for one of the two groups (eye shadow ormascara) is 0.15. Can you determine which group isreferenced?Pigmented makeup products like mascara and eye shadow may contain metal (e.g., nickel) allergens. Is a nickel allergy more likely to occur in women who report cosmetic dermatitis from using eye shadow or mascara? In a sample of 126 women with cosmetic dermatitis from using eye shadow, 11 were diagnosed with a nickel allergy. In a sample of 266 women with cosmetic dermatitis from using mascara, 26 were diagnosed with a nickel allergy. Use this information to complete parts a through c below. Question content area bottom Part 1 a. Compute a 95% confidence interval for the proportion of women with cosmetic dermatitis from using eye shadow who have a nickel allergy. The 95% confidence interval for eye shadow is enter your response here,enter your response here.