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AnnZ [28]
3 years ago
8

A newsletter publisher believes that more than 79% of their readers own a personal computer. Is there sufficient evidence at the

0.05 level to substantiate the publisher's claim? State the null and alternative hypotheses for the above scenario.

Mathematics
2 answers:
Katarina [22]3 years ago
6 0

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

m_a_m_a [10]3 years ago
6 0

Answer:

Null hypothesis H0 : u = 0.79

Alternative hypothesis Ha : u > 0.79

Where u is the proportion of their readers that owns a personal computer.

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean.

While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

Therefore, for the case above;

Null hypothesis H0 : u = 0.79

Alternative hypothesis Ha : u > 0.79

Where u is the proportion of their reader that owns a personal computer.

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Question 14
Reil [10]

Answer:

The system of equations has a one unique solution

Step-by-step explanation:

To quickly determine the number of solutions of a linear system of equations, we need to express each of the equations in slope-intercept form, so we can compare their slopes, and decide:

1) if they intersect at a unique point (when the slopes are different) thus giving a one solution, or

2) if the slopes have the exact  same value giving parallel lines (with no intersections, and the y-intercept is different so there is no solution), or

3) if there is an infinite number of solutions (both lines are exactly the same, that is same slope and same y-intercept)

So we write them in slope -intercept form:

First equation:

6x+y=-1\\y=-6x-1

second equation:

-6x-4y=4\\-6x=4y+4\\-6x-4=4y\\y=-\frac{3}{2} x-1

So we see that their slopes are different (for the first one slope = -6, and for the second one slope= -3/2) and then the lines must intercept in a one unique point. Therefore the system of equations has a one unique solution.

6 0
3 years ago
Write the expression that shows "3 times the sixth power of 10"
Fantom [35]
3 x 10^6. It looks funny on here but the exponent of 6 goes with 10.
3 0
3 years ago
The nurse develops a plan to prevent atelectasis in a postsurgical client. which intervention will be effective?
zloy xaker [14]
<span>Deep breathing every hour while supervised would be an effective intervention that a nurse might plan. This would help to prevent atelectasis in a post-surgical patient. Atelectasis is the complete or partial collapse of a lung. This is a very common complication following many procedures.</span>
5 0
3 years ago
I need helpful answers pls
Ivenika [448]

Answer:

X=5 the angle is 76 degrees

Step-by-step explanation:

The bottom angles are corresponding. So 52+52=104, so you need 76 more degrees. Then simple math to caculate x.

7 0
3 years ago
Evaluate the expression m + (3n - 5)2 when m = 6 and n = 4.<br> m+ (3n - 5)2 = ? A + (3 ?<br> -5)
vladimir1956 [14]

Answer:

20

Step-by-step explanation:

substitute first to get:

6 + (3·4 - 5)2

multiply 3 and 4 to get 12:

6 + (12 - 5)2

subtract 12 and 5 to get 7:

6 + 7(2)

multiply 7 and 2 to get 14

6 + 14 = 20

4 0
3 years ago
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