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liraira [26]
2 years ago
11

In a survey of 850 students in a school, 90% reported having pets at home. If the margin of error is 3.4%, what is the interval

that is likely to contain the exact percent of all people who have pets at home?
Between 3.4% and 90%
Between 90% and 93.4%
Between 86.6% and 90%
Between 86.6% and 93.4%
Mathematics
2 answers:
Ray Of Light [21]2 years ago
8 0

Answer:

Step-by-step explanation:

Taya2010 [7]2 years ago
6 0

Answer:

<h3>Between 86.6% and 93.4%</h3>

Step-by-step explanation:

<h3>To obtain the population proportion from the sample, we calculate the confidence interval ; </h3><h3> </h3><h3>Confidence interval = phat ± margin of error </h3><h3> </h3><h3>Phat = 90% ; margin of error = +3.4% </h3><h3>  </h3><h3> 90% ± 3.4% </h3><h3> </h3><h3>(90 - 3.4)% ; (90 + 3.4)% </h3><h3> </h3><h3>86.6% ; 93.4%</h3>
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Fay has a lemonade stand. She spends £35 on ingredients. She sells each glass of lemonade for £2.10. If she sells 50 glasses of
Zarrin [17]

Answer:

£70.00

Step-by-step explanation:

You basically want to find what she spent in total, then subtract the amount she spent on ingredients.

50 glasses of lemonade at £2.10 each would be £105. (50*2.1)

Subtract the cost of ingredients, which is £35, with the total she made, £105, to get £70 (105-35)

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3 years ago
What are the next 2 words in the pattern? half dollar, quarter, dime...
OleMash [197]

Answer:

Nickel and penny.

Step-by-step explanation:

The given pattern is

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This is a part of the pattern of US coins.

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Therefore, the required 2 words are nickel and penny.

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2 years ago
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Answer:

1) y = 5/2x - 3/2

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Step-by-step explanation:

1)

(1, 1) and (3, 6)

m = (y2 - y1)/(x2 - x1)

m= (6 - 1)/(3-1)

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m= 5/2

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2)

(2, 0) and (7, 2)

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2 years ago
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