Answer:
18,480
Step-by-step explanation:
Answer:
The standard error of the mean is 4.5.
Step-by-step explanation:
As we don't know the standard deviation of the population, we can estimate the standard error of the mean from the standard deviation of the sample as:

The sample is [30mins, 40 mins, 60 mins, 80 mins, 20 mins, 85 mins]. The size of the sample is n=6.
The mean of the sample is:

The standard deviation of the sample is calculated as:

Then, we can calculate the standard error of the mean as:

Answer:
Step-by-step explanation:
Answer:
(b)(i) LCM of 45 and 50 = 450
Hence, it take 450 minutes until both ovens ding simultaneously.
(b)(ii) 450÷50=9 banana cakes baked
450÷45=10 chocolate cakes baked.
Heyo Kiddo. How are you doing today?
Let's figure this out.
So, if "one number is p," then we can say the other number can represent the variable z.
We can conclude that: p + z = 45
For us to solve for z :
p + z = 45
- p -p
So then,
z = 45 - p
You're welcome. :)