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brilliants [131]
3 years ago
13

The length of a text messaging conversation is normally distributed with a mean of 2 minutes and a standard deviation of 0.5 min

utes. What is the probability that a conversation lasts longer than 3 minutes?
Mathematics
1 answer:
zhenek [66]3 years ago
5 0

Answer:

Let x be a random variable representing the length of a text messaging conversation, then

P(x > 3) = 1 - P(x < 3) = 1 - P(z < (3 - 2)/0.5) = 1 - P(z < 2) = 1 - 0.97725 = 0.02275

jorelis
2 years ago
thank you so much
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Solnce55 [7]

Answer:

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Step-by-step explanation:

-7x + 13 ≥ 41

Subtract 13 from both sides

-7x ≥ 28

Dividing both sides by the -7 changes the inequality sign and we have

x ≤ -4

Hence, the solution of the inequality is x ≤ -4 and the graph of the solution should have a vertical line passing through x = -4 and it should be shaded to the left of x = -4 indicating that only numbers less than or equal to -4 are possible solutions of the inequality.

Hope this Helps!!!

6 0
3 years ago
Is 95.045 greater than less than or <br> equal two 95.545
LekaFEV [45]
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8 0
3 years ago
Tanner is picking three varieties of apples at an orchard: Gala, Fuji, and Jazz. Each type of apple has a different cost per pou
Makovka662 [10]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
two men working together can complete a job in 1 hour 20 minutes. the first man working alone can complete the task in two hours
lana [24]

Answer:

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Step-by-step explanation:


6 0
3 years ago
Hey guys not good at math please help
faust18 [17]

Answer:

3/2

Step-by-step explanation:

Recall that slope is y2 - y1 / x2 - x1.

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Slope = (4 - 1) / (2 - 0) = 3 / 2.

Hope this helps!

5 0
3 years ago
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