I'm pretty sure the answer is B if you're using basic math [15+15+9+4=43]
78-43=35. Hope this helps.
Answer:
3x - 6 = x + 9
2x - 6 = 9
2x = 15
x = 7.5
Step-by-step explanation:
Answer:
Margin of error = 0.09
Confidence interval = (0.29, 0.41)
Step-by-step explanation:
Sample size, n = 1023
p = 38%
= 0.38
Standard deviation, σ = 1.5
Consider the level of confidence to be 95%
So, corresponding z* value for 95% confidence level = 1.96
Hence, confidence interval = p ± margin of error
= 0.38 ± 0.09
= (0.29, 0.47)