Find the probability that 3 randomly selected people all have the same birthday. ignore leap years. round to eight decimal place
2 answers:
Answer:
Probability that 3 randomly selected persons have same birthday = 0.00820417
Step-by-step explanation:
Probability that 1 person has different birthday = 1
The probability that all three persons have same birthday = 1 - 0.99179583
= 0.00820417
Hence, probability that 3 randomly selected persons have same birthday = 0.00820417
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Answer:
<h2>B. 7.1</h2>Step-by-step explanation:
Given the sample data 2 6 15 9 11 22 1 4 8 19, before we can get the standard deviation, we need to first calculate the mean.
mean = 2 +6 +15 +9 +11 +22 +1 +4 +8 +19/10
mean = 97/10
mean = 9.7
Standard deviation for ungrouped data is expressed using the formula;
<em>Hence the standard deviation of the sample data is 7.1</em>