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hodyreva [135]
3 years ago
15

The mean checkout time in the express lane of a large grocery store is 2.7 minutes, and the standard deviation is 0.6 minutes. T

he distribution of checkout times is non-normal (for one thing, it can be a lot longer than 2.7 minutes, but it can only be so short). (a) What is the probability that a randomly-selected customer will take less than 3 minutes?

Mathematics
1 answer:
Gennadij [26K]3 years ago
3 0

Answer:

0.6915

Step-by-step explanation:

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A car travels 100 meters in 5 seconds. What is the speed of the car?
Daniel [21]

Answer:

20 m/s

Step-by-step explanation:

Speed = distance/time

(100 m)/(5 s) = 20 m/s

3 0
3 years ago
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Say that every single class in Full Sails Masters Degree in Game Design has a 5% failure rate
natka813 [3]
The monthly failure rate is q = 5% = 0.05
The monthly pass rate is p = 1 - q = 0.95

We want to determine the probability of 12 passes in 12 consecutive months for a student.
P(12 of 12 successes) = ₁₂C₁₂ p¹² q⁰ = 0.95¹² = 0.5404.

Therefore if we have 100 students, the number that gets through 12  consecutive months is
100*005404 = 54 students.

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6 0
3 years ago
The ratio of the measure of three angles of a triangle is 2:3:10. Find the measure of the largest angle.
faltersainse [42]

Answer:

The measure of the largest angle:

120°

Step-by-step explanation:

The sum of the internal angles of a triangle = 180°:

2 + 3 + 10 = 15

then:

180/15 = 12

then, the measure of the largest angle:

10 * 12 = 120°

5 0
3 years ago
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Find the equation of the line perpendicular to the line x=9 that passes through the point (9,-1)
tia_tia [17]

Answer:

y = -1

Step-by-step explanation:

Notice that the line x = 9 is a vertical line, therefore a line perpendicular to it will be a horizontal line of the form y = constant number.

Since we want it to go through the point (9, -1), then we know that that y value needs to be "-1", and the equation of the line will be given by the expression:

y = -1

3 0
3 years ago
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The rule that maps each domain value to its range value is f(x)= ___x.
kirill115 [55]

Answer:

f(x) = 1/2x

Step-by-step explanation:

When x = -4  the output is -2

We are dividing by 2

When x = -2 the output is -1

f(x) = 1/2 x

Check when x = 2

f(2) = 1/2 (2) =1

3 0
3 years ago
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