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LenaWriter [7]
4 years ago
7

Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all

have the same body size in their adult phase, which made it easy to measure speeds in units of body lengths per second (bl/s). The researchers found that, when traffic is light and not congested, ant speeds vary roughly Normally, with mean 6.20 bl/s6.20 bl/s and standard deviation 1.58 bl/s.1.58 bl/s. (a) What is the probability that an ant's speed in
Mathematics
1 answer:
posledela4 years ago
5 0

This question is Incomplete

Complete Question

Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all have the same body size in their adult phase, which made it easy to measure speeds in units of body lengths per second (bl/s). The researchers found that, when traffic is light and not congested, ant speeds vary roughly Normally, with mean 6.20 bl/s and standard deviation 1.58 bl/s. (a) What is the probability that an ant's speed in light traffic is faster than 5 bl/s? You may find Table B useful. (Enter your answer rounded to four decimal places.)

Answer:

0.7762

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

Population mean = 6.20 bl/s

Standard deviation = 1.58 bl/s.

x = 5 bl/s

z = 5 - 6.20/1.58

z = -0.75949

The probability that an ant's speed in light traffic is faster than 5 bl/s is P( x > 5)

Probability value from Z-Table:

P(x<5) = 0.22378

P(x>5) = 1 - P(x<5)

= 1 - 22378

= 0.77622

Approximately to 4 decimal places = 0.7762

The probability that an ant's speed in light traffic is faster than 5 bl/s is 0.7762

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3 0
3 years ago
Help me please #7!!!!!!
MatroZZZ [7]

Applying parallel line postulate twice

36degree=3x degree +2y degree

126 degrees=12 x degree + 2y degree

So, the two equations are:

3x + 2y = 36

and

12x + 2y = 126

Eliminate x to solve for y

-(3x + 2y)= -(36)

-3x - 2y = -36

Combine the equations

(-3x - 2y)+ (12x + 2y) = (-36) + (126)

-3x -2y + 12x + 2y = -36 + 126

9x = 90

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3(10) + 2y = 36

30 + 2y = 36

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y = 3

Optional

Plug x into the other equation to check for error

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4 0
4 years ago
What expression shows a sum of four terms
s2008m [1.1K]

<span>4 + x + 4 + x x4 4(x + 4) 4x</span>
4 0
3 years ago
If you roll two four-sided dice (numbered 1, 2, 3, and 4), what is the probability that the sum of the dice is 3?
Elan Coil [88]

Answer:

The probability that the sum of the dice is 3, is 3/16.

Step-by-step explanation:

It is given that two four-sided dice are rolled.

Total number of sides of each dice = 4

Possible values for each dice = 1,2,3,4

If two four-sided dice are rolled, then the total possible outcomes are

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Total number of favorable outcomes = 3

The probability that the sum of the dice is 3.

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Therefore the probability that the sum of the dice is 3, is 3/16.

8 0
4 years ago
one endpoint of AB has coordinates (-3,5) If the coordinates of the midpoint of AB are (2,-6),what is the length of AB?
avanturin [10]
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so, the length of AB is twice that distance, or   \bf 2\sqrt{146}
3 0
3 years ago
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