Many doctors worry that heavy backpacks cause shoulder and back pain in students. Some doctors believe that backpacks should not weigh more than 10% of a student's body weight
The body and backpack weights of eight high school students are given here, along with a scatterplot of the data.
Weight (lbs)
Backpack
weight (lbs)
36
o
120
26
32
o
187
30
28
Backpack weight (lbs)
O
109
26
103
24
24
131
29
20
165
35
100
158
120 140 160 180
Student weight (lbs)
31
116
28
a.
Find a trend line for the data. Write your equation in slope-intercept form.

In a sample of 2023 u.s. adults, 373 said franklin roosevelt was the best president since world war ii. two u.s. adults are selected at random from the population of all u.s. adults without replacement. assuming the sample is representative of all u.s. adults, complete parts (a) through (d). (a) find the probability that both adults say franklin roosevelt was the best president since world war ii. the probability that both adults say franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (b) find the probability that neither adult says franklin roosevelt was the best president since world war ii. the probability that neither adult says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (c) find the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii. the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (d) which of the events can be considered unusual? explain. select all that apply. the event in part left parenthesis a right parenthesis is unusual because its probability is less than or equal to 0.05. the event in part (b) is unusual because its probability is less than or equal to 0.05. none of these events are unusual. the event in part (c) is unusual because its probability is less than or equal to 0.05.

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x