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Alexxandr [17]
3 years ago
10

The box plots represent the distributions of typing speeds of students before and after a computer-programming course.

Mathematics
1 answer:
NISA [10]3 years ago
4 0

Answer: the range of two distributions are the same

Step-by-step explanation:

So the last one

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Please simplify this fraction
saw5 [17]
I hope this helps you

6 0
3 years ago
The amount of soda dispensing machine pours into a can of soda is normally distributedwith a mean of 12 ounces and a standard de
kaheart [24]

Answer:

0.1056

Step-by-step explanation:

Mean(μ) = 12 ounce

Standard deviation (σ) = 0.2 ounce

P(x<11.75) = ???

Let x be the random variable for the amount of soda a machine will dispense.

Using normal distribution

Z = (x - μ) / σ

Z = (11.75 - 12) / 0.2

Z = (-0.25)/0.2

Z = -1.25

From the normal distribution table

1.28 is 0.3944

Φ(z) is the tabular value of z

Φ(z) = 0.3944

Recall that when Z is negative

P(x<a) = 0.5 - Φ(z)

P(x < 11.75) = 0.5 - 0.3944

= 0.1056

7 0
3 years ago
Two fractions with a difference of 1/3 but with neither denominator equal to 3
Rudiy27

Answer:

3/9 and 6/9

Step-by-step explanation:

3/9 is simplified to 1/3

6/9 is simplified to 2/3

3 0
2 years ago
Read 2 more answers
Sarah earns $10 per hour while babysitting and $20 per hour while cleaning houses. Sarah will need to earn $1000 during the summ
kozerog [31]
Why not just work for 50 hrs on house cleaning and get 1000$
4 0
3 years ago
The function f(x) = (x - 4)(x - 2) is shown.
agasfer [191]

Answer:

all real numbers greater than or equal to -1

Step-by-step explanation:

In order to solve this problem we need to know the vertex and the direction its pointing.

First we expand,

x^2-6x+8

To find the x value of the vertex we use this formula (-b/2a).

-(-6)/2(1) = 3

Now we plug 3 in the equation to get the y value,

(3)^2 - 6(3) + 8 = 9 - 18 + 8 = -1

The vertex is (3,-1)

We know the graph points up because x^2 is positive

The vertex is the lowest point, so we now know that -1 is the starting range and if the graph is pointing up, that means all values greater than -1.

This leads to our answer all real numbers greater than or equal to -1.

6 0
3 years ago
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