Answer:
the first one
Step-by-step explanation:
X = 2
y = -9
16 - negative 18 = -2
Answer:
0.15
Step-by-step explanation:
divide the length value by 1000
150mm to 0.15
Answer:
Step-by-step explanation:
Given that 33.4% of people have sleepwalked.
Sample size n =1459
Sample favourable persons = 526
Sample proportion p = 
Sample proportion p is normal for large samples with mean = 0.334 and
std error = 
a) P(526 or more of the 1459 adults have sleepwalked.)

b) Yes, because hardly 1.4% is the probability
c) 33.4 is very less compared to the average. Either sample should be improved representing the population or population mean should be increased accordingly.
Use photo math it works very well!