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Anna007 [38]
3 years ago
8

In constructing a confidence interval estimate for the difference between two population proportions, we:a. pool the population

proportions when the population means are equalb. pool the population proportions when the populations are normally distributedc. always pool the population proportions to construct confidence interval for p1 - p2d. never pool the population proportions to construct confidence interval for p1 - p2e. pool the population proportions when they are equal
Mathematics
1 answer:
siniylev [52]3 years ago
7 0

Answer:

In constructing a confidence interval estimate for the difference between two population proportions, we:”b.pool the population proportions when the populations are normally distributed”

Step-by-step explanation:

an interval within which the value of a parameter of a population has a stated probability of occurring.

DescriptionIn statistics, interval estimation is the use of sample data to calculate an interval of possible values of an unknown population parameter; this is in contrast to point estimation, which gives a single value.

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DiKsa [7]

Note: You missed to add the dot plots chart. As I found the chart after a little research. Thus, I am attaching it and based on that dot plot chart I am solving the question which anyways would clear you concept.

Answer:

'There are about 2 more students in each class at Oak Middle School than at Poplar Middle School' is the correct statement.

Step-by-step explanation:

From the diagram, it is clear that

The data set containing Poplar Middle School:

20   20   20   21   21   21   21   21   22   22   22   22   22   22   22   23   23   23   23   24  

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

\mu = 435/20

  =\frac{87}{4}

   = 21.75

The data set containing Oak Middle School:

20   21   21   22   22   23   23   23   23   24   24   24   25   25   26   26   27   27   28   29  

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

\mu = 483/20

   =24.15

So, the difference in mean will be:

                                            24.15 - 21.75 = 2.4

Therefore, 'there are about 2 more students in each class at Oak Middle School than at Poplar Middle School' is the correct statement.

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Answer:

X = -3

Step-by-step explanation:

X/2-5 = 1

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Step-by-step explanation:

What is the least positive integer by which 24 should be divided so that the resulting integer is a perfect square?

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A

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