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alexgriva [62]
3 years ago
13

The Cincinnati Enquirer reported that, in the United States, 66% of adults and 87% of youths ages 12 to 17 use the Internet. Use

the reported numbers as the population proportions and assume that samples of 300 adults and 300 youths will be used to learn about attitudes toward Internet security.
A. What is the probability that the sample proportion of adults using the Internet will be within or - 0.04 of the population proportion?
B. Show the sampling distribution of p¯ where p¯ is the sample proportion of adults using the Internet.
C. What is the probability that the sample proportion of youths using the Internet will be within ±.04 of the population proportion?
D. Is the probability different in parts (a) and (c)? If so, why?
Mathematics
1 answer:
monitta3 years ago
4 0

Answer:

D

Step-by-step explanation:

i think so but it will help you

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RoseWind [281]

Answer:

55 ft.

Step-by-step explanation:

First find the area of Lot X

67 • 70 = 4,690

Subtract the are of Lot X from the total area

8,375 - 4,690 = 3,685

3,685 is the area of Lot Y

Now divide 3,685 by the length of Lot Y : 67

3,685 ÷ 67 = 55

The width of Lot Y is 55 ft.

Hope this helps!

5 0
3 years ago
Which of the following is true about the expression 3 Squared times 12 squared
ololo11 [35]

Answer:

?

Step-by-step explanation:

the expression would look like this:  3^2 x 12^2

3 squared is 9 (3 x 3)

12 squared is 144 (12 x 12)

3 0
3 years ago
There were 3 apple, 1 mixed fruit, 2 grape, and 4 tropical fruit juice boxes in the cooler at the picnic. What is the probabilit
Agata [3.3K]
There are total 10 juice boxes
P(grape) first pick:
2/10=1/5
P(grape) second pick:
1/9
As a result, the probability that, when Jill reaches into the cooler to grab two juice boxes without replacing them, she grabs two that are grape is 1/45. Hope it help!
8 0
3 years ago
I'm so confused I need help please
Leviafan [203]

Answer:

CD||GH is "equal"  ABD is "Right angle" and ABD||GEF is "Approximately equal"

8 0
3 years ago
A salesperson earns a commission of $504 for selling 2,800 in merchandise. Find the commission rate. Write your answer as a perc
Zielflug [23.3K]

Answer:

18%

Step-by-step explanation:

\frac{504}{2800} = \frac{x}{100} ----> cross multiply

504(100) = 2800x

50400 = 2800x

\frac{50400}{2800} = \frac{2800x}{2800}

18 = x

Commission Rate: 18%

3 0
3 years ago
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