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Talja [164]
3 years ago
6

Suppose that the average number of accidents occurring on a highway each day is 3.5. Find the probability that at least two acci

dents occur today. Find the probability that at most one accident occurs today.
Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
7 0

Answer: 0.1359

Step-by-step explanation:

This is a Poisson distribution. The formula for calculating Poisson distribution is given as :

P (X = x) = \frac{e^{-λ}λ^{x}}{x!}

λ = 3.5

To find the probability that at most one accident occur today implies that , accident might not happen at all , the maximum accident that can happen is 1, substituting this into the formula , we have

P(X=0) = \frac{e^{-3.5}3.5^{0} }{0!}

P(X=0) = 0.0302

P(X=1) =   \frac{e^{-3.5}3.5^{1} }{1!}

P(X=1) = 0.1057

Therefore , the probability that at most one accident occurs today.

= 0.0302 + 0.1057

= 0.1359

P(x=2) =   \frac{e^{-3.5}3.5^{2} }{2!}

P(X=2) = 0.1850

irina1246 [14]3 years ago
3 0

Answer:

48 yards

Step-by-step explanation:

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3x^3+x^2-12x-4 by x+2
stepan [7]

Answer:

i think it is c

Step-by-step explanation:

6 0
2 years ago
For each value of x, determine whether it is a solution to x+37 = 46. Is it a solution? X 6 ? х 12 x 9 x 83 ?​
Paha777 [63]
1. If x=6, 6+37=?46 43≠46. It isn’t a solution.
2. If x=12, 12+37=?46 49≠46. it’s not a solution.
3. If x=9, 9+37=?46. 46=46. It’s a solution!
4. If x=83, 83+37=?46. 120≠46. Not a solution.

Only x=9 Is a solution.

Hope it helps!
6 0
2 years ago
Read 2 more answers
Does it have a solution and why?
Paha777 [63]
Yes, it has infinetly many solutions
5 0
3 years ago
Sat scores are distributed with a mean of 1,500 and a standard deviation of 300. you are interested in estimating the average sa
Svetach [21]
The z-score is given by:
z=(x-mean)/s.d
the z-score giving us P(0.95)=1.96 and -1.96
thus;
-1.96=(x-1500)/300
-588=x-1500
x=-588+1500
x=912
also:
1.96=(x-1500)/300
588=x-1500
x=588+1500
x=2,088
therefore the sample size of the student picked will be given by:
2,088-912
=1,176

4 0
3 years ago
In 4 hours the bake sale earned $84.48<br> What is the unit rate?(money per hour)
marysya [2.9K]

Answer:

$21.12 per hour

Step-by-step explanation:

A unit fraction is a fraction over one

Divide 84.48 by 4

6 0
2 years ago
Read 2 more answers
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