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8_murik_8 [283]
3 years ago
9

A recent survey has shown that 68% of professional photos are of humans, 39% are of pets, and 17% are of both humans and pets. S

uppose a professional photo is selected at random and it is of a human. What is the probability that the photo also has a pet?
0.17
0.25
0.39
0.44
Mathematics
2 answers:
tiny-mole [99]3 years ago
7 0

I think the answer 0.17 I'm sorry I may be wronh

Alexxx [7]3 years ago
7 0

Answer:

.25

Step-by-step explanation:

I just took the quiz

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A researcher is conducting a study of charitable donations by surveying a simple random sample of households in a certain city.
nirvana33 [79]

Answer:

H0: p ≤ 0.50

Ha: p > 0.50

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

For the case above;

Let p represent the proportion of households in the city that gave a charitable donation in the past year

The null hypothesis is that the proportion of households in the city that gave a charitable donation in the past year is not more that 0.50

H0: p ≤ 0.50

The alternative hypothesis is that the proportion of households in the city that gave a charitable donation in the past year is more that 0.50

Ha: p > 0.50

7 0
3 years ago
Decline of 11.3%
Katarina [22]

Answer:

decay.

Step-by-step explanation:

decline means reduce, which is a negative term. decay is also negative.

decimal form= .113 or .11

3 0
3 years ago
20% of the rose Annette picked from a rose garden were red if she picked 10 red roses how many roses did she pick from the garde
horrorfan [7]

Answer:

Option A

Annette picked  50 roses  from the garden

Step-by-step explanation:

Let us understand the problem, designating letters to represent unknown quantities.

Let the total number of roses = x

20% of the roses were red means that 20% of x = red

Since the number of red roses = 10,

we will have that 20% of x = 10

mathematically, we will have

\frac{20}{100} \times x = 10\\x= \frac{1000}{20}= 50

hence, Annette picked  50 roses  from the garden

7 0
3 years ago
What is the value of n? n–2= 10n+ 4/2 Enter your answer in the box.
pentagon [3]

Answer:

-4 / 9

Step-by-step explanation:


 n - 2 = 10n + 4/2

 n - 10n = 4/2 + 2

 -9n = 4/2 + 4/2 ( taking LCM of 4/2 and 2)

 -9n = 8/2

 -9n = 4

    n = 4 / -9

   

   therefore n = -4 /9 ( since the minus sign doesn't make a difference whether placed at numerator or denominator) .


7 0
3 years ago
What is not right?? HELP PLS
liubo4ka [24]

Answer:

its supposed to be 120 degrees because the angle picture thingy looks like its an obtuse angle and too big to be 60 degrees

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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