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Zina [86]
3 years ago
13

Paulo is creating a confidence interval based on sample data for the percentage of Americans that own a dog. His work is shown b

elow.
for some reason it won't let me add in the picture as an attachment or as anything. Basically its like this- E = 1.645 • .452(1-.452)/950
And then all of the .452 etc is in a little square root thing.

Based on Paulo’s work, what conclusion can be drawn from the sample data he collected?


Complete the statement to form the conclusion.

It can be said with


90% confidence that between 42.5% and 47.9% of Americans own a dog.

90% confidence that between 45.2% and 54.8% of Americans own a dog.

95% confidence that between 42.5% and 47.9% of Americans own a dog.

95% confidence that between 45.2% and 54.8% of Americans own a dog.

The answer is (A) but if someone wants to explain why it is (A) that would be awesome
Mathematics
2 answers:
Andrews [41]3 years ago
5 0

Answer:

A. 90% confidence that between 42.5% and 47.9% of Americans own a dog.

Step-by-step explanation:

edgu 2020

Gekata [30.6K]3 years ago
4 0

Answer:

Checked on edg. , the answer is A. Thanks!

Step-by-step explanation:

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HURRY!<br> What are all the possible rational solutions for x^4-3x^2+2x5=0
xxTIMURxx [149]

Answer: x = 1

x =(-3-√-15)/4=(-3-i√ 15 )/4= -0.7500-0.9682i

x =(-3+√-15)/4=(-3+i√ 15 )/4= -0.7500+0.9682i

x2 = 0

Step-by-step explanation:

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3 years ago
I need help on this question ​
Musya8 [376]
1. added four to both sides
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3 0
2 years ago
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If y is directly proportional to x and y = 5 when x =2, what is the value of y when x=6
sammy [17]

Answer:

y=15

Step-by-step explanation:

The formula for direct variation is

y = kx

5 =k*2

Solve for k

Divide by 2

5/2 = k

y = 5/2 x

Now we substitute x=6

y = 5/2(6)

y = 15

7 0
2 years ago
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A recent survey suggests that 85% of college students have a job, 54% live on campus, and 42% have a job and live on campus. Wha
OLga [1]

\frac{97}{100} probability that a randomly chosen college student either has a job or lives on campus.

What is probability?

  • Probability is an area of mathematics that deals with numerical descriptions of how probable an event is to occur or how likely a statement is to be true.
  • The probability of an event is a number between 0 and 1, where 0 denotes the event's impossibility and 1 represents certainty.

To find the probability that a randomly chosen college student either has a job or lives on campus:

Given: 85% of college students have a job, 54% live on campus, and 42% have a job and live on campus.

So, out of 100 students, 42 students either has a job or live on campus.

43 college students have a job and 12  live on campus.

So, 43 + 42 + 12 = 85 + 54 - 42

85 + 12 = 139 - 42

97 = 97

Therefore, \frac{97}{100} probability that a randomly chosen college student either has a job or lives on campus.

Know more about probability here:

brainly.com/question/24756209

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3 0
2 years ago
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