Answer:
https://brainly.com/
Step-by-step explanation:
He will need 15 loads to cover his entire driveway.
1/5 of the driveway would be 3 loads
3x5=15
Answer:
She walks 100 m in 1 minute
Step-by-step explanation:
Here, given the equation, we want to know the distance covered in a minute
From the question, the equation is;
d = 100t
so when t is 1
d = 100 * 1 = 100 m
I believe its 4. Hope it helped!
Answer:
The minimum sample size to have this margin of error is n = 897.
Step-by-step explanation:
We have to estimate a parameter with a confidence interval. The confidence level is 95% and the margin of error is 0.5 days.
The population standard deviation is 7.64 days.
The critical value of z for a 95% confidence interval is z=1.96.
We have to calculate the minimum sample size.
To do that, we use the margin of error formula in function of n:
The minimum sample size to have this margin of error is n = 897.