You measure 44 textbooks' weights, and find they have a mean weight of 51 ounces. assume the population standard deviation is 11.8 ounces. based on this, construct a 95% confidence interval for the true population mean textbook weight. give your answers as decimals, to two places

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300