N SRS of 21 students at UH gave an average height of 5.5 feet and a standard deviation of .1 feet. Construct a 90% confidence interval for the mean height of students at UH. a) (5.462, 5.538) b) (4.250, 6.950) c) (5.328, 5.672) d) (5.492, 5.508) e) (4.000, 7.300) f) None of the abov

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?