OptionAStep-by-step explanation:95% confidence interval is obtained using the following formulaCOnfidence interval lower bound = mean - critical value * sigma/sq rt nand upper bound = mean + critical value*sigma/sq rt nThus margin of error = critical value*sigma/rt nvaries indirectly as n provided others are remaining the same.Hence lower sample indicates higher margin of errorOut of 4 options given we find that 1 option has maximum margin of error as 21%Hence option. A is most likely coming from a small sample.
B 216 because if you multiply pi with the answer you get 678.58
Answer:
40 kg/m³
Step-by-step explanation:
To find the density divide the mass by the volume
440kg / 11 m³ = 40 kg/m³
180-(60+54)=66
So the answer is 66*
