Answer:
q
Step-by-step explanation:
Answer:
10.5
Step-by-step explanation:
Using a confidence interval of proportions, it is found that the correct statement is given by:
D a confidence interval for estimating the cricket's true probability of landing on its feet is more narrow after the final 10 jumps than it was before the final 10 jumps.
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:

In which:
is the sample proportion.
The margin of error is given by:

The margin of error is inversely proportional to the square root of the sample size, hence, the higher the sample size, the narrower the interval is, hence option D is correct.
More can be learned about a confidence interval of proportions at brainly.com/question/25890103
The probability of winning when there is only one prize, is:
P = 1/2,790,720
<h3>
How to find the probability?</h3>
Each ticket has 6 different numbers, in order, from 1 to 20.
- The first number has 20 options.
- The second number has 19 options (because the numbers can't repeat).
- The third number has 18 options, and so on.
The total number of possible combinations is given by the product between the numbers of options, so there are:
C = 20*19*18*17*16*15 = 27,907,200 possible tickets.
So, if Trina purchases 10 tickets, she has a probability of 10 out of 27,907,200 winning (when we assume that there is only one prize)
Then the probability is:
P = 10/27,907,200 = 1/2,790,720
If you want to learn more about probability, you can read:
brainly.com/question/251701
Answer:
the answer is c
Step-by-step explanation:
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