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horsena [70]
3 years ago
9

The average number of Saturday night shootings is 5 a night. What’s the chance that there will be a need for exactly 3 shootings

this Saturday?
Mathematics
1 answer:
pishuonlain [190]3 years ago
5 0

Answer:

0.14

Step-by-step explanation:

Using the poisson probability relation :

P(x = x) = (λ^x * e^-λ) ÷ x!

From the question ; mean, λ = 5 ; x = 3

Hence,

P(x = 3) = (5^3 * e^-5) ÷ 3!

P(x = 3) = (125 * 0.0067379) / 6

P(x = 3) = 0.8422375 / 6

P(x = 3) = 0.140

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It takes 45 minutes to drive to the nearest bowling alley taking city streets going
Savatey [412]

Answer:

21 minutes

Step-by-step explanation:

Given the following :

Taking CITY STREET:

Time taken to drive to nearest bowling alley = 45 minutes = 45/60 = 0.75 hours

Speed of travel = 30 miles per hour

Taking FREEWAY:

speed of travel = 65miles per hour

If the distance to bowling alley is the same along both routes, The time taken along FREEWAY will be :

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Distance to bowling alley taking city center :

Speed = distance / time

30 mph = distance / 0.75 hour

Distance = 30 × 0. 75 = 22.5 miles

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7 0
3 years ago
Help help please please
gregori [183]

Answer:

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Step-by-step explanation:

h=c

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Using pythogorean theorem,

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c=√(7^2+5^2)

c=√(49+25)

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3 0
3 years ago
Read 2 more answers
William and Emma go into a burger shop with a total of $40.00 to spend. Burgers cost $4.50 each and soft drinks cost $1.00 each.
Ainat [17]

Answer:

12 items in total

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Hello : 
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