Answer:
Hello your question is incomplete attached below is the complete question
answer : 1596 ± 2.861 ------ ( A )
Step-by-step explanation:
I will use excel function to resolve this question
<u>Determine the 99% confidence of interval for the difference in mean number of steps by all people</u>
∝ = 0.01
critical value ( t ) = 2.861 ( = TINV ( 0.01, 19 )
Given that :
S1 = 1580
S2 = 2350
n1 = 20
n2 = 20
Difference in mean = x1 - x2 = 1596
Margin of Error = t *
∴ 99% confidence of interval
= 1596 ± 2.861 ------
Answer:
9
Step-by-step explanation:
0.15
+3.00=3.15
3.15÷35=0.09
0.09×100=9
Answer:
135°
Step-by-step explanation:
a supplementary angle is equal to 180°. since you already have the measure of ZA, all you need to do is subtract 45°, the measure of ZA, from 180°, the total measure of a supplementary angle, in order to figure out the measure of ZB.
180 - 45 = 135, therefore the measure of ZB = 135°.
Answer:
$134.40
Step-by-step explanation:
40 % of $120 = 120*40/100 = $48
= 120 + 48 =$168
20% of $168 = 168*20/100 = $33.60
= 168 - 33.60 = $134.40
Answer:
false
Step-by-step explanation:
3×-8=-24
-171+9=-162
so -24 is not equal to-162