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lukranit [14]
3 years ago
5

Statistics question! 12 pts

Mathematics
1 answer:
Nataly [62]3 years ago
5 0

Answer – C. the sample size 16 is too small

 

If we toss a coin 16 times in order to test the hypothesis H0: p = 0.5 that the coin is balanced, we can't use the z-test for a proportion in the situations because the sample size 16 is too small. The z-test is best used when the sample size is greater than 30; when the sample size is less than 30, t-test is more appropriate.

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Complete the parts to match <br><br> Photo uploaded I need help with the second one?
Rudik [331]
I think is is:
7/20=35/100=0.35=35%
Hope I'm not wrong!
Hope this helps! :D
6 0
3 years ago
Solve the proportion.<br><br> 2/13=x/104<br><br> A. 16<br><br> B. 26<br><br> C. 676<br><br> D. 8
Andrej [43]

Answer:

Step-by-step explanation:

its A. 16.

4 0
3 years ago
Read 2 more answers
Write the number equal to 5 tens and 13 ones.
tekilochka [14]
Hi, Sthefy! This is just a little bit of adding, not too hard! Okay, 5 tens. What is 1 ten equal to? 10!
 
2 tens? 20!

3 tens? 30!
 
You get the idea? Okay, so now we know that 5 tens are 50. Now, ones. All we need to do now is add 13 + 50! Let's break it down, make it easier.

13.. Hm, what can we do to make this easier? 

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3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7B%28%20%5Csqrt%7B3%7D%20%29%7D%5E%7Bx%20%2B%20y%7D%20%20%3D%209%20%5C%5C%20%20%7B%28%20%5
algol13

<h2>\bf \purple{ \underline{Given :-}}</h2>

• \:  {( \sqrt{3} )}^{x + y}  = 9\:  \:  \: \: (i)

• \:  {( \sqrt{2} )}^{x - y}  = 32 \:  \:  \: \: (ii)

\\

<h2>\bf \purple{ \underline{To  \: Find :- }}</h2>

•   {\sf{The  \: value  \: of}} \:   \: 2x+ y.

\\

\huge\bf \purple{ \underline{Solution :- }}

\sf{From \:  equation \:  (i), }

{( \sqrt{3} )}^{x + y}  = 9

⇒ {( \sqrt{3} )}^{x + y}  =  ({ \sqrt{3} })^{4}

⇒ x + y = 4 \:  \:  \: \: (iii)

\\

\sf{From \:  the  \: equation \:  (ii)}

{( \sqrt{2} )}^{x - y}  = 32

⇒( { \sqrt{2} })^{x - y}  =(  { \sqrt{2} })^{10}

⇒x - y = 10 \:  \:  \: \: (iv)

\\

\sf{We \:  have \:  to  \: add \:  equation \:  (iii)  \: and \:  equation  \: (iv)}

x + y + x - y = 4 + 10

⇒2x = 14

⇒x = 7

\\

\sf{Subtracting \:  equation \:  (iii)  \: from  \: equation  \: (ii),  }

x  - y - x - y = 10 - 4

⇒ - 2y = 6

⇒y =  - 3

\\

\bf\therefore x = 7 \: \:  and  \: \: y =  - 3

\\

{ \sf{Th e \:  value \:  of }}= 2x +y

\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:   \: =2 \times 7  + ( - 3)

\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:   \: =14 - 3

\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:   =11

\bf \red{Hence,  \: the  \: value \:  of  \: 2x + y  \: is  \: 11. }

7 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPPPPP I"LLLL GIVE FIVE STAARS AND BRAINLIEST!!!!!!!!!!!!!!!
ollegr [7]

Answer:

c. f(n) = (n+1)^2 + 2

Step-by-step explanation:

It is c. because...

f(n) = (1+1)^2 + 2

        2^2 + 2

        4 + 2 = 6 (first term)

f(n) = (2+1)^2 + 2

        3^2 + 2

        9 + 2 = 11 (second term)

f(n) = (3+1)^2 + 2

        4^2 + 2

        16 + 2 = 18 (third term)

3 0
3 years ago
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