I'm having trouble with these questions. Any help would be appreciated!! It's over Confidence Interval for Proportions.

Question 3 Question 8 An Internet service provider sampled 523 customers, and nds that 137 of them experienced an interruption i According to the US. Census Bursa-J. 43% of men who worked at home were cellege graduates. In a sample of 431 speed service during the previous month. What is the upper bound for the 99% condence interval for the proportion of wernen whe worked at heme. 167 were Lullege graduates. What is the upper bound for the 99% mndence interval for customers who experienced an interruption? the proportion of women who work at home who are college graduates? Round to three decimal places (for example: 0.419). Write only a number as your answer. Round to three decimal places [for example: 0.419). write only a number as your answer. Question 9 A medical researcher wants to construct a 99% condence interval for the proportion of knee replacement surgeries that result in complications. An article in the Journal ofBone andJ'oi'nt Surgery suggested that approximately 8% of such operations result in complications. Using this estimate, what sample siz 's needed so that the condence interval will have a margin of error of0.054 ? Questlon 4 Write only an integer as Your answer. In a sample of52 water specimens taken from a construction site, 17 contained detecmble levels of lead. What is the upper bound for the 90% condence interval for the proportion of water specimens that contain detectable levels of lead. Round to three decimal places (for example: 0.419). Write only a number as your answer. Question 5 Sleep apnea is a disorder in which there are pauses in breathing during sleep. People with this condition must wake up QUCStiD" 10 frequently to breathe. In a sample of 336 people aged 65 and over, 103 ofthem had sleep apnea. What is the lower . _ _ . bound for the 90% condence interval for die proportion ofthose aged 65 and over who have sleep apnea. A researcher wants to construct a 99% condence interval for the proportion of people who changedjobs In the past year. What sample size is needed so that the condence interval will have a margin of error of 0.020 ? Round to three decimal places [for example: 0.419). Write only a number as your answer. _ _ Write only an Integer as your answer. Question 11 A pollster wants to constmct a 95% condence interval for the proportion of adulm who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the condence interval will have a margin of error of 0.013 ? Question 6 ' _ Wnte only an Integer as your answer. In the computer game World of Warcraft, some of the strikes are critical strikes, which do more damage. Assume that the probability of a critical strike Is the same for every attack, and that attacks are independent. During a particular ght, a character has 226 critical strikes out of 568 attacks. What is the lower bound for the 99% condence interval fol the proportion of strikes that are critical strikes. Round to three decimal places [for example: 0.419). Write only a number as your answer. Question 7 Question 12 The Nielsen Company surveyed 315 owners of Android phones and found that 224 of them planned to get another A pollster wants to constmct a 95% condence interval for the proportion of children who wabch Spongebob Android as their next phone. What is die lower bound for the 95% condence interval for the proportion of Android Squarepants. Estimate the sample size needed so that the confidence interval will have a margin oferror of 0.036 ? users who plan to get another Android? Write only an integer as your answer. Round to three decimal places (for example: 0.419). Write only a number as your