2. A teacher wants to determine whether the mean reading speed of certain students is
more than 600 words per minute. He took a random sample of seven of the students
who read, respectively, 604, 615, 620, 603, 600, 560, and 610 words in one minute.
[2*3= 6 pts]
a. State null and alternative hypothesis.
b. Are these data good evidence that the average speed of certain students is more
than 600 words per minute? Use the a = 0.05.

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true