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tino4ka555 [31]
3 years ago
5

20 points

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer:

Frist 60

Second: 24.50

Step-by-step explanation:

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A 99% confidence interval for the difference between two proportions was estimated at 0.11, 0.39. Based on this, we can conclude
sladkih [1.3K]

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

4 0
3 years ago
Solve -1 7/8 * (-2 2/5)
Semmy [17]

Answer:

exact form:

9/2

decimal form:

4.5

mixed number form:

4 1/2

Step-by-step explanation: sorry if this wasnt what you were looking for.

3 0
3 years ago
Ruben bought 6 comic books for $21dollar , 21. Each comic book was the same price.
musickatia [10]

Answer:

3.5 dollars

Step-by-step explanation:

The price of one comic book is 3.5.

I got this by dividing 21 and 6  

6 0
3 years ago
Read 2 more answers
QUICKK EXPERTS/ACE/GENIUSES<br> ( question #2 )
kiruha [24]

180 - 90 -18 = 72


Answer is D 72 degrees

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You are trapped in a dark cave with three indistinguishable exists on the walls. One of the exits takes you 3 hours to travel an
bija089 [108]

Answer:

6 HOURS

Step-by-step explanation:

5 0
3 years ago
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