Answer:
k
=
2
√
19
,
−
2
√
19
Step-by-step explanation:
Take the root of both sides and solve.
Answer:
The correct answer is A. Whether the relative was born in Korea; Whether the relatives speak korean
Step-by-step explanation:
Step-by-step explanation:
A. Rational Number
square root 36 = 6/1
It can be write in a ratio.
A geometric sequence follows a pattern with a common ratio.
Find the ratio between 3 and 9
If you multiply 3 by 3 the answer would be 9.
The common ratio is 3.
Now multiply 9 by 3 to get 27.
The answer is D. 27
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.
