Solve this question with Equipment Replacement Method

answer part 2 frq styed please and show work 1. Because of the constantly evolving political climate around the United States, Gallup (who regularly conducts polls in the U.S.) conducted a poll just after the inauguration asking U.S. adults if they approve of the initiatives President Biden had implemented in his first few days in office. Another Gallup poll was conducted now that President Biden has been in office for a month asking U.S. adults if they approve of the initiatives President Biden had implemented after his first month in office.   According to the first Gallup poll of 1500 randomly selected U.S. adults, 64% approved of the initiatives President Biden had implemented in his first few days in office.  And according to the second Gallop poll of 1700 U.S. adults, 54% approved of the initiatives President Biden had implemented after his first month in office. Construct and interpret a 95% confidence interval for the change (difference) in the true proportion of U.S. adults…

6. A population of 6 mice doubles every 4 weeks. When will this population reach 120 mice? Use an algebraic solving process.

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4. Height is sometimes used to determine medicinal or nutritional needs. When a patient is bedridden, it can be difficult to determine height accurately. To deal with this issue, formulas have been developed that are based on a measurement that can be easily obtained on a prone patient Height in cm (females) 84.88 (0.24 x age) (1.83 x knee height) Height in cm (males) 64.19-(0.04 × age) + (2.02 × knee height) To find a patient's knee height, the knee and ankle of the patient are held at a 90° angle and the length from the heel to the knee is measured in centimeters. Age is in years. Based on: www.rxkinetics.com a. Find the height of an 80-year-old female patient whose knee height is 16 inches. Give the final result in inches. b. Test the formula on yourself to see how accurately your knee height and age predict your height.

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I've figured out the first part of this problem but I can't seem to figure out the other parts of this problem. Please help

There are two different formulas or methods that can be used to calculate SS.a. Under what circumstances is the definitional formula easy to use? Be specific and include 2 examples not mentioned in the book.b. Under what circumstances is the computational formula preferred? Be specific and include 2 examples not mentioned in the book.

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Richard Dulski's firm is about to bid on a new radar system. Although the product uses new technology, Dulski believes that a learning rate of 75% is appropriate. The first unit is expected to take 700 hours, and the contract is for 40 units. a) The total amount of hours to build the 40 units = 9606 hours (round your response to the nearest whole number). b) The average time to build each of the 40 units = hours (round your response to two decimal places).