Lisa wrote this expression to describe the number of chairs that were set up in the meeting hall. 8 × r which situation could be described by this expression? a. lisa knows there were a total of 8 chairs. she does not know how many rows there were. b. lisa knows there were 8 seats in each row. she does not know how many rows there were. c. lisa knows there were 8 rows altogether. she does not know how many seats were plastic. d. lisa knows there were 8 seats altogether. she does not know how many seats were reserved.

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?