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Arlecino [84]
3 years ago
9

A high school student named David Merrell did a study of how music affects the ability of rats to run a maze. He trained 71 rats

to run a maze. Next he randomly divided the rats to three groups. Each group had 23 or 24 rats. For the next month, one group of rats listened all day to heavy metal music by the group Anthrax. One group listened all day to Mozart. One group never heard music. The rats ran the same maze three times a week for a month. The response variable is the time in seconds to complete the maze. By the end of the month he compared the average run time for each treatment group to the average run time for the control group. The Anthrax group was much slower at running the maze. The Mozart group was much faster. The differences are statistically significant at the 1% level. Run times are not heavily skewed in any group. What conclusion can we draw from these results?
Mathematics
1 answer:
ladessa [460]3 years ago
3 0
I don’t understand what you are saying...
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Someone plz help me with all plz
Lyrx [107]

Answer:

Step-by-step explanation:

A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a/b or {\displaystyle {\tfrac {a}{b}}}  

b

a

​  

, where a and b are both integers. As with other fractions, the denominator (b) cannot be zero. Examples include {\displaystyle {\tfrac {1}{2}}}  

2

1

​  

, {\displaystyle -{\tfrac {8}{5}}}−  

5

8

​  

, {\displaystyle {\tfrac {-8}{5}}}  

5

−8

​  

, and {\displaystyle {\tfrac {8}{-5}}}  

−5

8

​  

.

3 0
3 years ago
Describe and correct the error in writing an equation of the line shown
Rudiy27

Answer:

y  = -\frac{3}{5}x+4

Step-by-step explanation:

Given:

(x_1,y_1) = (0,4)

(x_2,y_2) = (5,1)

The attachment completes the question

From the attachment, the slope of the line was calculated as:

m = \frac{1-4}{0-5}

This step is inaccurate because the slope of a line is calculated using

m = \frac{y_2-y_1}{x_2-x_1}

Which gives

m = \frac{1-4}{5-0}

m = \frac{-3}{5}

m = -\frac{3}{5}

The line equation is then calculated using:

y -y_1 = m(x - x_1)

Substitute values for m, x1 and y1

y - 4 = -\frac{3}{5}(x - 0)

y - 4 = -\frac{3}{5}(x)

Open bracket

y - 4 = -\frac{3}{5}x

Make y the subject

y  = -\frac{3}{5}x+4

6 0
3 years ago
Find the length of AD in the figure
Mrac [35]
Find the area of the trapezoid and the shaded area then subtract and u have ur answers
7 0
3 years ago
Which phrase best describes the translation from the group y=2x^2 to the graph of y= 2x^2 +5
dsp73

Answer:

The graph move up 5.

Step-by-step explanation:

When we add a constant to the end of a parabola, it shifts the graph up and down. Since the constant here is positive, the graph moves up by that number (5)

7 0
3 years ago
Fracción equivalente de 1/3
Scrat [10]

Answer:

2/6

Step-by-step explanation:

1/3 times 2

4 0
3 years ago
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