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Serggg [28]
3 years ago
7

A marketing representative wants to estimate the proportion of people in a state who like the new design on the packaging of a c

ertain cleaning product. The representative interviewed 100 people at a certain supermarket, and 82 people indicated that they liked the new design. Have the conditions for creating a confidence interval for the population proportion bemer A) Yes, because the sample was selected at random Yes, because sampling distributions of population proportions are mod c e s, because the sample is large enough to satisfyere normality condition D) No, because the sample is not large enough to satisfy the normalty.com c) No, because the sample may not be representative of speech
Mathematics
1 answer:
Effectus [21]3 years ago
8 0

Answer:

The correct option is;

(B) Yes, because sampling distributions of population proportions are modeled with a normal model.

Step-by-step explanation:

Here we have the condition for normality being that where we have a population with a given mean and standard deviation, while a sufficiently large sample is drawn from the population while being replaced, the distribution of the sample mean p will be distributed normally according to central limit theorem.

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Answer:

Step-by-step explanation:

A The axis of symmetry of a parabola will always pass through the vertex.   TRUE!

B The axis of symmetry of a parabola will sometimes pass through the vertex.  FALSE!

C The axis of symmetry of a parabola will never pass through the vertex.  FALSE

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Please help ! This is 7th grade math and I’ve been stuck on this question for 30 minutes!
FinnZ [79.3K]

\dfrac{1}{22}\:\dfrac{\text{in}}{\text{hr}}

Step-by-step explanation:

The amount of time from 10pm to 7am is 9 hours. However, the time indicated is 7:10am. Since there are 60 minutes in an hour, 10 min is equal to 1/6 of an hour. Therefore, the total time that the water level of the pool decreased is 9\frac{1}{6} hours or \frac{55}{6} hours. To find the rate at which the water level decreased, we divide the change in the water (in inches) by the time it took to reach that level. So we write

rate of change = \dfrac{\text{change\:in\:height}}{\text{change\:in\:time}}

\:\:\:\:\:\:\:= \dfrac{\frac{5}{12}\:\text{in}}{\frac{55}{6}\:\text{hrs}}

\:\:\:\:\:\:\:=\dfrac{5}{12}\cdot\dfrac{6}{55}\:\dfrac{\text{in}}{\text{hr}}

\:\:\:\:\:\:\:= \frac{1}{22}\:\dfrac{\text{in}}{\text{hr}}

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Answer: Choice #3 - compressed horizontally and translated by 4 units to the right.

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This corresponds to horizontal shift to the right by 4 units and a horizontal compression.

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Step-by-step explanation:

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