Mathematics, 08.08.2019 20:10 Kylehc21

The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. the sample mean is $150 and the standard deviation is $20. using the empirical rule, about 95% of the monthly food expenditures are between what two amounts?
a. $205 and $220
b. $85 and $105
c. $100 and $200
d. $110 and $190

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:30, apere655

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Answers: 1

continue

Mathematics, 22.06.2019 00:40, littlemoneyh

M? aoc=96 ? space, m, angle, a, o, c, equals, 96, degree \qquad m \angle boc = 8x - 67^\circm? boc=8x? 67 ? space, m, angle, b, o, c, equals, 8, x, minus, 67, degree \qquad m \angle aob = 9x - 75^\circm? aob=9x? 75 ? space, m, angle, a, o, b, equals, 9, x, minus, 75, degree find m\angle bocm? bocm, angle, b, o, c:

Answers: 2

continue

Mathematics, 22.06.2019 01:00, londonchanel

What is the period of the sinusoidal function ?

Answers: 3

continue

Mathematics, 22.06.2019 02:00, dondre54

90.0% complete a b c d e confirm last week, your delivery runs took 7 hours 12 minutes on monday, 6 hours 46 minutes on wednesday, and 6 hours 53 minutes on friday. what was your average time for a delivery run?

Answers: 3

continue

You know the right answer?

The monthly amounts spent for food by families of four receiving food stamps approximates a symmetri...