In a random sample of 20 people, the mean commute time to work was 33.5 minutes and the standard deviation was
7.2 minutes. assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

What is the lcm of 16 and 40 ? 24 and 40 ?

What is the interquartile range of this day at set?