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4 years ago

After the z value is calculated, the ____________ is obtained from a table of z-scores.

1 answer:

7 0

The critical value will be established. This is the point at which the researcher can reject the null hypothesis because the value falls outside the bounds at which the result was due to random chance. Values inside this bound show that the result cannot be determined to be due to the variables, so they cannot be used to reject the null hypothesis.

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Solve each equation below for x show all work and check your answer by substituting it back into the equation and verifying that

Viefleur [7K]

Answer:

The equations are

(a) x/3 = 6

(b) (5x + 9)/2 = 12

(d) 5/x = 20/8

The answers to the question are

(a) x = 18

(b) x = 3

(d) x = 2

Step-by-step explanation:

(a) x/3 = 6

Therefore x = 3×6 = 18

x =18

Substituting the value of x in the above equation, we have

18/6 = 3 verified

(b) (5x + 9)/2 = 12

Multiplying both sides by 2 gives

(5x + 9)/2 × 2 = 12×2 = 24

5x + 9 = 24 or x = (24-9)/5 = 3

Substituting the value of x in the above equation, we have

(5×3 + 9)/2 = 24/2 = 12 verified

x = 3

Multiplying both sides by 4, we have

x/4×4 = 9/6×4 = 6

x = 6

Substituting the value of x in the above equation, we have

(6/4 = 9/6 = 3/2 verified

(d) 5/x = 20/8

Inverting both equations, we have

x/5 = 8/20

Multiplying both sides by 20 we have x/5 × 20 = 8/20 × 20 or 4x = 8 and x = 2

Substituting the value of x in the original equation, we have

2/5 = 2/5 = 8/20 verified

x = 2

6 0

3 years ago

A Circular clock face has a diameter of 7 inches what is the area of the clock face? round the nearest 10 a.38.5 Square inch. B.

Tcecarenko [31]

A circular clock face has a diameter of 7 inches.
What is the area of the clock face?
Round to the nearest tenth.

A. 38.5 in.2

3 0

3 years ago

Read 2 more answers

Sam’s brother is 7 years older than Sam . His mother is 4 less than 3 times Sam’s age . Their combined age is 63 . How old is Sa

iren [92.7K]

Answer:

Sam is 12, sam's brother is 19, and sam's mom is 32.

Step-by-step explanation:

First the equation you need to use is S+7+S+3S-4=63(the variable s represents Sam), you combine the like terms which then equals 5S+3=63, then you use inverse operations. Subtract 3 on both sides, 5S=60, then you divide on both sides which equals S equals 12. Then you just plug in the number, S is Sam which means Sam's 12. Then 12+7 which is 19, Sam's brother. Then 3 times 12 minus 4 is 32. And if you check to make sure, 12+19+32 does equal 63.

6 0

3 years ago

What is the value of x + 186 when x = -21

fredd [130]

Answer:

165

Step-by-step explanation:

-21+186=165 .....

7 0

3 years ago

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PLEASE HELP!!! write a 10 line free verse poem about cosmetology

dalvyx [7]

Answer:

First, settle on a theme or event you'd like to write about. Try to set the scene in your head and go from there. Then write down some key words that relate to your story. Since you don't need to worry about matching up words and rhyming them, you should be able to incorporate most of these words in your poem

Step-by-step explanation:

Poem is,

When I sitting heard the astronomer where he lectured with much applause in the lecture-room,

How soon unaccountable I

became tired and sick,

Till rising and gliding out I

wander’d off by myself,

In the mystical moist night-air,

and from time to time,

Look’d up in perfect silence at the

stars.

3 0

3 years ago

Read 2 more answers