<h2>
Answer with explanation:</h2>
Given : Sample size : n = 36
Significance level for 90% confidence :
Sample mean :
Standard deviation :
By using standard normal table for t-values,
Critical t-value :
Thus, the correct value of t to construct a 90% confidence interval for the true mean percentage of cacao :
Confidence interval for population mean :
Hence, A is the correct answer .
Answer:
1)a
2)c
3)b
4)a
Step-by-step explanation:
No further explanations needed
Answer:
60°
Step-by-step explanation:
Let angle BAE = angle ACD = x
BCD = AEC = 60°
EAC + FCA + ECF + AEC = EAC + x + 60° + 60° = 180°
EAC = 60° - x
BAC = EAC + BAE = 60° - x + x = 60°
Answer:
12
Step-by-step explanation:
213 multiplied by 0 divided and add parenthese by 283 multiplied by 516, and add a parenthese, and add, and add a parenthese by 120 multiplied by 10 divided by 100.