Answer: The proportion of students spending at least 2 hours on social media equals 0.7257 .
Step-by-step explanation:
Given : The typical college freshman spends an average of μ=150 minutes per day, with a standard deviation of σ=50 minutes, on social media.
The distribution of time on social media is known to be Normal.
Let x be the number of minutes spent on social media.
Then, the probability that students spending at least 2 hours (2 hours = 120 minutes as 1 hour = 60 minutes) on social media would be:
Hence, the proportion of students spending at least 2 hours on social media equals 0.7257 .
Answer:
sandwiches n[S]=4
drinksn[D]=3
desserts[d]=2
total n[T]=9
number of possible choices for:
4 sandwiches=n[S]/n[T]=<u>4/9</u>
For
3 drinks=n[D]/n[T]=3/9=<u>1/3</u>
and
For 2 desserts=n[d]/n[T]=<u>2/9</u>
Answer:
18 dollars and 21 cents. $18.21
Step-by-step explanation:
Answer:
166.25
Step-by-step explanation:
12 1 /4 + 154
166 1/4
665/4 , 166.25
Answer:
I think it's parallelograms.....
Step-by-step explanation:
Parallelograms; a four-sided plane rectilinear figure with opposite sides parallel.