1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vaieri [72.5K]
3 years ago
12

A 99% confidence interval for the difference between two proportions was estimated at 0.11, 0.39. Based on this, we can conclude

that the two population proportions are equal.
Mathematics
1 answer:
sladkih [1.3K]3 years ago
4 0

Answer:

\hat p_1 -\hat p_2 \pm z_{\alpha/2} SE

And for this case the confidence interval is given by:

0.11 \leq p_1 -p_2 \leq 0.39

Since the confidenc einterval not contains the value 0 we can conclude that we have significant difference between the two population proportion of interest 1% of significance given. So then we can't conclude that the two proportions are equal

Step-by-step explanation:

Let p1 and p2 the population proportions of interest and let \hat p_1 and \hat p_2 the estimators for the proportions we know that the confidence interval for the difference of proportions is given by this formula:

\hat p_1 -\hat p_2 \pm z_{\alpha/2} SE

And for this case the confidence interval is given by:

0.11 \leq p_1 -p_2 \leq 0.39

Since the confidence interval not contains the value 0 we can conclude that we have significant difference between the two population proportion of interest 1% of significance given. So then we can't conclude that the two proportions are equal

You might be interested in
HELP PLS I WILL MARK BRAINLYIiEST ASAP!!!!
kicyunya [14]

Answer: 50.84%

Step-by-step explanation:

(89-59) /59 = 0.5084/100 = 50.84%

8 0
3 years ago
Isweartogodiwillanswerthisquestion<br> please answer my question im dumb
denis23 [38]

Answer:      B Or A

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Kendra types 72 words per minute. At this rate, how long will it take Kendra to complete a letter of 900 words?
riadik2000 [5.3K]

900 ÷ 72 = 12.5 minutes

Thus the correct answer is option A .

7 0
3 years ago
Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively.
TiliK225 [7]

Answer:

d. 200 and 2

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

Mean = 200

Standard deviation = 18

Sample size: 81

Standard error: s = \frac{18}{\sqrt{81}} = 2

So the correct answer is:

d. 200 and 2

7 0
3 years ago
Read 2 more answers
Idk ;-; lol help meeeee
masha68 [24]

Step-by-step explanation:

the answer is $.75

:))))))

8 0
3 years ago
Other questions:
  • Question 2 of 25
    12·2 answers
  • Find the indefinite integral. (use c for the constant of integration.) sin xcos5 x dx
    9·1 answer
  • I need help ASAP please I only have a few mins
    10·2 answers
  • Which of the following angles is not coterminal with the other three? Question 15 options: 231° 51° –129° 591°
    11·1 answer
  • What is 5000 1/10 of
    10·1 answer
  • Use the permutation formula to solve a problem when n = 8 and r = 4.
    8·2 answers
  • Mai skated x miles, and Clare skated 3/4 farther than that. Write an expression for the distance Clare skated. You may use fract
    13·1 answer
  • Lin runs 5 laps around a track in 6 minutes. How many minutes per lap is that? ___minutes How many laps per minute is that? ___
    9·1 answer
  • YURRRRRRRRRRRRRRRRRRR help due June 30
    15·2 answers
  • You have $6.17. you buy 7 items that cost $0.76 each. how much money do you have left
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!