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Vika [28.1K]
3 years ago
8

A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1211 males​ surveyed, 185 responded that they ha

d at least one tattoo. Of the 1097 females​ surveyed, 130 responded that they had at least one tattoo. Construct a 90​% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p 1 represent the proportion of males with tattoos and p 2 represent the proportion of females with tattoos. Find the 90​% confidence interval for p 1 minus p 2.
Mathematics
1 answer:
Liula [17]3 years ago
3 0

Answer:34%

Step-by-step explanation:I think this is right but I don’t really understand

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(p^3 - 56p + 57) ÷ (p + 8) using synthethic division
pav-90 [236]
We need to perform division given the following expression:

                            p²    - 8p   + 8
 
                          -------------------------------
              (p+8) 
√ (p³  + 0p²  -56p  +57)
                           - (p³  + 8p²)
                            ---------------------------- 
                               0p³  - 8p² -56p   + 57
                                      - (-8p    - 64p)
                                     --------------------------
                                         0p²   + 8p + 57
                                                - (8p  + 64)
                                             --------------------------
                                                    0  - 7 

The answer is p²-8p+8 + (-7/p³-56p+57).
5 0
3 years ago
Examples of singular and non-singular matrix.​
finlep [7]

Answer:

Step-by-step explanation: For example, if we have matrix A whose all elements in the first column are zero. Then, by one of the property of determinants, we can say that its determinant is equal to zero. Hence, A would be called as singular matrix. Note that singular matrices are non-invertible (their inverse does not exist).

3 0
2 years ago
9. What is the vertex of the function? f(x) = 3x² - 8x + 10​
Delvig [45]

Answer:

The vertex of the function is (1.333, 4.667)

Step-by-step explanation:

1. Calculate -b / 2a. This is the x-coordinate of the vertex.

2. simply plug -b / 2a into the equation for x and solve for y.

Y = 3x^{2}  - 8x + 10\\Compare with the form of   y = ax^{2} + bx + c\\So that means a = 3, b = -8, and c = 10.

Calculate -b/2a:

X = -(-8)/2(3)

X = 8/6

This is equal to 1.33 recurring

Plug 8/6 for x and solve for y:

Y = 3x^{2} - 8x + 10

Y = 3(\frac{8}{6})^{2} - 8(\frac{8}{6}) + 10

Y = \frac{48}{9} - \frac{64}{6} + 10\\

This is equal to 4.66 reccuring.

7 0
2 years ago
the price of an item has been reduced by $4.07. the new sale price is 82.09. what was the original price
riadik2000 [5.3K]

Answer:

$86.16

Step-by-step explanation:

82.09+4.07=86.16

5 0
3 years ago
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Please help! 20 points and brainly!!
boyakko [2]

Answer: 7/21 is the answer because 7 * 2 = 14 and 21*2=42

Step-by-step explanation:

3 0
2 years ago
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