Kendra wants to pay 500 photographs into an album 6 photos to a page she figures that she will need about 100 pages
2 answers:
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The given sum for n = 1 to n = 15 is equal to 255, so the correct option is B.
<h3>How to find the sum of the given series?</h3>
We want to find the sum of the series whose elements are of the form:
(2n + 1)
From n = 1 to n = 15.
Then our sum will be:
(2*1 + 1) + (2*2 + 1) + ... + (2*15 + 1).
3 + 5 + ... + 31
This is the sum of all odd numbers in the interval [3, 31]
Which gives:
So the correct option is B.
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Answer:
The probability of having 121 cases or less is:
This suggests that the study does not show any significantly effect of the use of cell phone in the probability of having brain or nervous system cancer. The use of cell phone does not appear to be a significant factor in the risk of having this type of cancer.
Step-by-step explanation:
We start by calculating the expected standard deviation of the population cases:
Then, to calculate the probability, we first calculate the z-score for 121 cases.
The probability of having 121 cases or less is:
This suggests that the study does not show any significantly effect of the use of cell phone in the probability of having brain or nervous system cancer. The use of cell phone does not appear to be a significant factor in the risk of having this type of cancer.