researcher with A. C. Nielsen wanted to determine the number of television sets in households. He conducts a survey of 40 randomly selected households and obtains the following data: 1 1 4 2 3 3 5 1 1 2 2 4 1 1 0 3 1 2 2 1 3 1 1 3 2 3 2 2 1 2 3 2 1 2 2 2 2 1 3 1 a. Estimate the mean number of televisions in a household. b. Estimate the variance of the number of televisions in a household. c. Estimate the standard deviation of the number of television in a household.

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright

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?