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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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Answer:

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Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Please help explanation if possible
Eva8 [605]

Answer:

612 adults

361 students

Step-by-step explanation:

To solve this question, set two equations:

Let x be number of adults and y be number of students.

As there are in total 937 people, the equation would be the sum of both adults and children:

x+y=937

x=937-y  ...... ( 1 )

As the total sale amount is $1109, the equation would be to add up the ticket fee:

2x+0.75y=1,109  ...... ( 2 )

Put ( 1 ) into ( 2 ):

2(937-y)+0.75y=1,109

1874-2y+0.75y=1,109

-1.25y=-765

y=763/1.25

y=612

Put y into ( 1 ):

x=973-612

x=361

Therefore there are 612 adults and 361 students.

5 0
2 years ago
Rx+9/5=h solve for x
Vika [28.1K]
When solving the equation, you first have h- 9/5. So it would by x=(h - 9/5). But you are not done yet. you still have to divide it by R to get x. So the final equation is x=(h - 9/5) ÷ R
7 0
3 years ago
In the basketball game a player scored 4 three-pointers. How many points did he achieve with the 8 three-pointers? ​
Bogdan [553]

He scored 24 points which means that after scoring the 4 three pointers, he would have to score another 4 three pointers (12 points)

6 0
2 years ago
John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 .
lapo4ka [179]

Answer:

John is 17,

Susan is 14,

and Khalid is 9.

Step-by-step explanation:

a = John's age

b = Susan's age

c = Khalid's age

Let's set our rules from the given information.

a = b + 3

c = b - 5

a + b + c = 40

Now, we can solve for b through substitution.

(b + 3) + b + (b - 5) = 40

3b - 2 = 40

3b = 42

b = 14

So, now that we have Susan's age, we can follow the rules and see if it holds.

17 + 14 + 9 = 40 Viola!

8 0
3 years ago
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