Answer:
y=3/2-1
Step-by-step explanation:
there
1/2 of the time
d=st
distance=speed times time
we want to find time
divide both sides by speed
d/s=t
d=20
s=40
20/40=t
1/2=t
this is in hours
she drove for 1/2 hour or 30 mins
Answer:
48
Step-by-step explanation:
60 = 5x
x = 12
12x4 = 48
Answer:
what the what lolllll
Step-by-step explanation:
Answer:
a.is approximately normal because of the central limit theorem.
Step-by-step explanation:
The central limit theorem states that if we have a population with mean μ and standard deviation σ and we take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed.
For any distribution if the number of samples n ≥ 30, the sample distribution will be approximately normal.
Since in our question, the sample of observations is 50, n = 50.
Since 50 > 30, then <u>our sample distribution will be approximately normal because of the central limit theorem.</u>
So, a is the answer.
