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Veronika [31]
3 years ago
8

A recent poll of over 2,000 adults was designed to answer the question "Are adults superstitious?" One survey item concerned the

phrase "see a penny, pick it up, all day long you'll have good luck." The poll found that just one-third of adults (33%) believe finding and picking up a penny is good luck. Consider a random sample of 15 adults and let x represent the number who believe finding and picking up a penny is good luck. Complete parts a though f below.A. A success is an adult who does not believe finding and picking up a penny is good luckB. A success is an adult who believes finding and picking up a penny is bad luck.C. A success is an adult who does not believe finding and picking up a penny is bad luck.D. A success is an adult who believes finding and picking up a penny is good luck.
Mathematics
1 answer:
RSB [31]3 years ago
8 0

Answer:

i think you can divide 2,000 and 30 it might get you the answers if not try these adding multiplucation or subtraction.

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11. If a square has an area of 121 square meters, what is the side length? A. 60.5 m B. 12 m C. 11 m D. 484 m​
butalik [34]

Answc

Step-by-step explanation:

answer= C. 11m

3 0
3 years ago
Evaluate the function f(x) = 3x2− 2x for x= 4.
kykrilka [37]

Answer:

40

Step-by-step explanation:

f(4) = 3(4²) - 2(4)

= 3(16) - 8

= 48 - 8

= 40

when x=4, f(x) = 40

6 0
2 years ago
Factor the polynomial completely. Use synthetic division. <br><br> F(x) = x^3-7x-6
aleksklad [387]

Answer:

The factors of given polynomial    x =-1 , -2 and x =3

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given the polynomial  

                    f(x) =  x³ - 7x -6

 put x =-1

               f(-1) = (-1 )³- 7(-1) - 6 = -1+7-6=0

(x+1) is a one factor

By using synthetic division

                   x³    x²      x      constant

     x=-1  ↓   1      0      -7        -6

             <u>↓   0     -1      1          6</u>

            <u>       1       -1      -6       0     </u>

<u />

<em>The polynomial    x² - x - 6 </em>

<u><em>Step(ii):-</em></u>

The factors ( x+1)(x² - x - 6 ) = 0

     x = -1 and x² - x - 6 =0

    x =-1    and  x² - 3x + 2 x - 6 =0

   x =-1     and  x (x -3) + 2( x-3) =0

   x =-1     and  (x+2)(x-3) =0

<u><em>Final answer:-</em></u>

The factors of given polynomial    x =-1 , -2 and x =3

6 0
2 years ago
A group of volunteers for a clinical trial consists of 86 women and 79 men. 20 of the women and 21 of the men have high blood pr
Irina18 [472]

Answer:

Dear user,

Answer to your query is provided below

Probability that the person has high blood pressure given that it is a women = (20/41)

Step-by-step explanation:

Total no. Of high blood pressure = 20+21 = 41

Total no. Of women with high pressure = 20

Probability = 20/41

4 0
2 years ago
About 57 people rent skates at the skating rink each day. It cost $4.25 to rent skates. About how much does the Rink make in ska
seraphim [82]

Answer:1695.75

Step-by-step explanation:

We know that there are 7 days in a week. Since 57 people rent skates each day, we know that 57*7=399 skates are rented each week. Since one skate cost 4.25, we know that 399*4.25 is the cost, which is 1695.75. (If you are not allowed to use a calculator, you can do 400*4.25-4.25, to make it easier to compute)

4 0
3 years ago
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