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A pollster reports that their results are considered accurate within +3.4%, 99 times out of 100. Determine the confidence level of the poll. Select one: O a. 99% O b. 3.4% O C. 1% O d. 90% O e. 10% O f. 6.8%The results of a survey have a confidence interval of 73.6% to 81.8%. The survey is considered accurate 99 times out of 100. Determine the margin of error. Select one: O a. + 4.1% O b. + 2.0% O c. + 1.0% O d. + 8.2%In a recent survey of high school students, one quarter of those surveyed said they would vote for Caimin as student council secretary. The survey is considered accurate within +3.0 percentage points, 9 times out of 10. If Caimin's high school has 2000 students, state the number of votes Caimin should expect. Select one: O a. 330 - 670 O b. 300 - 700 O c. 440 - 560 O d. 410 - 590Which sample size will have the least margin of error? Select one: O a. 2400 O b. It is impossible to tell with only this information. O C. 800 O d. 1600Kayden works at a factory making hand-finished artisnal wood flooring. The production process makes floorboards that have a mean thickness of 45 mm with a standard deviation of 1.8 mm. Kayden sells floorboards with thickness between 42 mm and 45 mm at a higher price, as "premium" floorboards. What proportion of Kayden's boards are "premium" floorboards? Select one: O a. 43% O b. 45% O c. 39% O d. 41%In a normally distributed population of Zoidbergs, 50% of adults are taller than 225.0 cm and 20% are taller than 246.1 cm. The mean and standard deviation for this population are: Select one: O a. mean is 220 cm and standard deviation is 25 cm. O b. mean is 225 cm and standard deviation is 30 cm. O c. mean is 225 cm and standard deviation is 25 cm. O d. mean is 220 cm and standard deviation is 30 cm