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Svet_ta [14]
2 years ago
14

1. In a study on the likability of comedians, 10 participants observed one of two comedians (one who was humorous and one who wa

s not humorous), and rated how likeable these comedians were on a 9-point scale from 1 (not likeable at all) to 9 (very likeable). The ratings are the data below. Test to see if the humorous comedian was liked more or less than the nonhumorous comedian, using alpha = .05 and four steps. Also calculate and interpret effect size and explained variance if appropriate.]
Mathematics
1 answer:
garri49 [273]2 years ago
7 0

Answer:

a. 84 < n + (n + 2) + (n + 4) < 96

b. 26 < n < 30

step-by-step explanation:

using 'n' to represent the smallest even number, the next even number would be 'n + 2' and the next even number would be 'n + 4'. so, the expression to represent three consecutive even numbers is: n + (n + 2) + (n + 4).

since the sum of the these numbers needs to be between 84 and 96, we can set up the following inequality:

84 < n + (n + 2) + (n + 4) < 96

in order to solve for 'n', we must first combine like terms:

84 < 3n + 6 < 96

subtract 6 from all sides: 84 - 6 < 3n + 6 - 6 < 96 - 6 or 78 < 3n < 90

divide 3 by all sides: 78/3 < 3n/3 < 90/3 or 26 < n < 30.

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If Aiden and Natalie each set the arm length of their catapults to 55 centimeters, which statement is true?
Tema [17]

Answer:

Not enough information

Step-by-step explanation:

one of the catapults could have more force than the other

7 0
2 years ago
Read 2 more answers
What is the perimeter of rhombus LMNO?
kicyunya [14]

If you see that 3x-3 and set it equal to x+7 then you will get this,

3x-3=x+7


Now solve for X. You will get 5.

Then you plug five in and get 12 For both sides and then multiply 12 by 4 and get 48.

You answer is 48.

Hope this helps you.

4 0
2 years ago
Read 2 more answers
The function d=0.006s squared represents the braking distances d in meters of a car at a speed s in kilometer per second.Graph t
Molodets [167]

Answer:

Part 1) The graph in the attached figure

Part 2) The value of s is approximately 45 km/sec

Step-by-step explanation:

<u><em>The complete question is</em></u>

The function d=0.006s² represents the braking distances d in meters of a car at a speed s in kilometer per second.Graph the function. Then use your graph to estimate the speed of the car if its braking distance is 12 meters

Part 1) Graph the function

Let

s ----> the speed in kilometers per second

d ----> the braking distances in meters

we have

d=0.006s^2

This is a quadratic equation (vertical parabola) open upward (the leading coefficient is positive)

The vertex represent a minimum

The vertex is the origin

The axis of symmetry is the y-axis

Find the values of d for different values of s

so

For s=0 km/sec ----> d=0.006(0)^2=0\ m ---> point (0,0)

For s=20 km/sec ----> d=0.006(20)^2=2.4\ m ---> point (20,2.4)

For s=30 km/sec ----> d=0.006(30)^2=5.4\ m ---> point (30,5.4)

For s=40 km/sec ----> d=0.006(40)^2=9.6\ m ---> point (40,9.6)

For s=50 km/sec ----> d=0.006(50)^2=15\ m ---> point (50,15)

To graph the function plot the points and connect them  

see the attached figure

Part 2) Use your graph to estimate the speed of the car if its braking distance is 12 meters

Looking at the graph

For d=12 m

The value of s is approximately 45 km/sec

see the attached figure

5 0
2 years ago
A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror. The pipe is lo
vodomira [7]

Answer: x^2=32y


Step-by-step explanation:

Given:  A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror.

The pipe is located 8 inches from the vertex of the mirror.

Assume the vertex is at the origin.

If the parabola opens upwards

then the coordinates of focus= (0,8)

We know that equation of parabola with focus (0,a) and open upards is of the form (vertex=(0,0)) is

x^2=4ay

Substitute the value of a=8 in equation, we get

x^2=4\times8y

\Rightarrow\ x^2=32y

Therefore, equation of the parabola that models the cross section of the mirror is x^2=32y

3 0
2 years ago
On a coordinate plane, a line and a point are shown. Line G H has points (negative 4, 1) and (2, negative 2). Point J is at (1,
olchik [2.2K]

Answer:

1,4,5

Step-by-step explanation:

edge

5 0
2 years ago
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