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maw [93]
2 years ago
6

What are the typical null and alternate hypotheses for a significance test on slope?

Mathematics
1 answer:
Tju [1.3M]2 years ago
8 0
I'm sure you should look it up on Google I'm pretty sure that that would help you more than this stupid app OK look it up on Google or a Siri it will help you a lot better
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A government agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted
mylen [45]

let n be the number of times letter be found (1800), p be the success rate (0.068), and q be the failure rate (1 - 0.068 = 0.932)  

mean = np = 1800 x 0.068 = 122.4  

standard deviation = √(npq) = √(1800 x 0.068 x 0.932) = 10.6807414

4 0
3 years ago
3 times a number is 54 less than the square of that number. Find the negative solution.
Pavel [41]

Answer:

x=-6

Step-by-step explanation:

Let x be the number

3x = x^2 -54

Subtract 3x

3x-3x = x^2 -3x-54

0 = x^2 -3x-54

Factor

What 2 numbers multiply to -54 and add to -3

-9*6 = -54

-9+6 = -3

0=(x-9) (x+6)

Using the zero product property

x-9=0    x+6=0

x=9  x=-6

The questions asks for the negative solution

x=-6

3 0
3 years ago
In an apartment complex with 28 units, 19 of the renters keep a pet. What percentage does not keep a pet?
Aleks04 [339]

If 19 out of 28 renters keep a pet, there are 28-19 = 9 renters who don't keep a pet.

Whenever you have a subset of some set, and you want to know which percentage of the set the subset represents, you simply have to compute

\dfrac{\text{number of elements in the subset}}{\text{number of elements in the set}}\times 100

So, in your case, you're wondering what percentage of 28 does 9 represent. So, the formula becomes

\dfrac{9}{28}\times 100 = 0.32\overline{142857}\times 100 = 32.\overline{142857} \approx 32.14\%

6 0
2 years ago
Evan had 120 baseball cards. He gave 18 of them to his friend and the rest to his brother. What percent of the baseball cards di
jeka94

Answer:

85%

Step-by-step explanation:

Evan had 120 baseball cards. He gave 18 of them to his friend and the rest to his brother.

The number of baseball cards he gave to his brother is :

120 - 18 = 102 baseball cards

The percent of the baseball cards he gave to his brother is calculated as:

(Number of baseball cards given to his brother/ Total number of baseball cards) × 100

= 102/120 × 100

= 85%

The percent of baseball cards Evans gave his brother is 85%

3 0
2 years ago
What is the volume of the cone with a diameter of 9ft and a height of 15ft? Use the formula v - 5 nr?h. Use 3.14 for 5 and round
Juli2301 [7.4K]

Answer:

V≈318.09ft³

Step-by-step explanation:

V=πr2h/3

=π·4.52·15/3

≈318.08626ft³

8 0
2 years ago
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