I guessed “doesn’t matter” but I really want to know why it might be that
1 answer:
I'm sorry, but the spinner that you choose does matter in this case.
For spinner A, there are 5 equal sections with a 1 being in only one of them as well. This gives you a
chance of landing on the number 1.
For spinner B, there are 6 equal sections with a 1 being in only one of them. This gives you a
chance of landing on the number 1 - a worse chance than if you were to use spinner A.
So for this question, you have a better chance of landing on number 1 if you choose to use spinner A.
For spinner A, there are 5 equal sections with a 1 being in only one of them as well. This gives you a
For spinner B, there are 6 equal sections with a 1 being in only one of them. This gives you a
So for this question, you have a better chance of landing on number 1 if you choose to use spinner A.
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Answer:
And we can find this probability using excel or the normal standard tabe and we got:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using excel or the normal standard tabe and we got: