In a random group of 23 people, what is the chance in percent that two people have the same birthday ?
2 answers:
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Answer:
f(x) = -34x + 320
Step-by-step explanation:
In the figure attached, the graph of the data and the options are shown.
We can see from the graph that the best fit line for the data would have a negative slope (as x values increase, y values decrease) and a positive y-intercept (the y value at x = 0). The only option that satisfies these two criteria is f(x) = -34x + 320
Answer:
e. 545
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
The estimate is the mean of the two bounds. So
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
In this question, L = 0.82. So
So the correct answer is:
e. 545