Answer:
See explanation.
Step-by-step explanation:
13. (4*5)/2 = 10
14. 5*7=35 7-3=4 8-5=3 (4*3)/2 = 6 35+6 = 41
15. 3*4 = 12
16. (4*4)/2 = 8 8*4=32 4*2=8 16*8=128 128-32 = 96
Let me know if you want me to better explain how I solved any of these.
Answer:
Step-by-step explanation:
n = 400
Proportion p = 229/400= 0.5725
For 95% confidence interval we use Z value as 1.96
Std error = 0.025
margin of error = 1.96*0.025
Confidence interval 95% = 0.5725±Margin of error
= (0.524, 0.621)
b) When smiled x becomes 277
p = 0.6925
Std error = 0.023
Margin of error= 1.96*0.023
Confidence interval = (0.647, 0.738)
Smiling increases the chances of stopping since mean and conidence interval bounds are showing increasing trend.
Answer:
(-6, -8) and (6, -8)
Step-by-step explanation:
Think of this as a right triangle
The hypotenuse is 10
The "y" leg is |-8| = 8
x² + 8² = 10²
x² + 64 = 100
x² = 36
x = ±6
two points
(-6, -8) and (6, -8)
Answer:
The first one lol
Step-by-step explanation:
