Answer:
12.158333333 miles per hour or 12
Step-by-step explanation:
24 × 5 = 120 hrs
1459÷120=12.15833333
or 12 miles per hour
This is a binomial probability problem
p = 0.35 = chance of picking 1 person who uses smartphones during meeting/class
n = 7 = sample size
k = 4 = target number of people who use their smartphone
Compute nCk = 7C4 using the nCr combination formula
nCr = (n!)/(r!*(n-r)!)
7C4 = (7!)/(4!*(7-4)!)
7C4 = (7*6*5*4!)/(4!*3!)
7C4 = (7*6*5)/(3!)
7C4 = (210)/(6)
7C4 = 35
Use this coefficient to find the binomial probability
B(k) = binomial probability for input k
B(k) = (nCk)*(p^k)*(1-p)^(n-k)
B(4) = (7C4)*(0.35^4)*(1-0.35)^(7-4)
B(4) = 35*(0.35^4)*(0.65)^3
B(4) = 0.144238
So the approximate answer is 0.144238
This value is accurate to 6 decimal places
Answer:
2050
Step-by-step explanation:
<u>Year 2010</u>
The number of people over 65 years of age =32 million
Total population = 307 million.
P(meeting a person over 65 at random in 2010)
![=\dfrac{32 \text{ million}}{307\text{ million}} \\\\=0.1042](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B32%20%5Ctext%7B%20million%7D%7D%7B307%5Ctext%7B%20million%7D%7D%20%5C%5C%5C%5C%3D0.1042)
<u>Year 2050</u>
The number of people over 65 years of age =88 million
Total population = 434 million.
P(meeting a person over 65 at random in 2050)
![=\dfrac{88\text{ million}}{434\text{ million}} \\\\=0.2028](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B88%5Ctext%7B%20million%7D%7D%7B434%5Ctext%7B%20million%7D%7D%20%5C%5C%5C%5C%3D0.2028)
Conclusion: Since 0.2028 is greater than 0.1042, the chances of meeting a person over 65 at random will be greater in 2050
Answer:
the alphabet.
Step-by-step explanation:
It’s the red square. 39.2. Work below. please mark me brainliest!!