A scientist is studying tulips and daffodils. The scientist estimates that there are 150 tulips in the population of 600 tulips
2 answers:
You might be interested in
Answer:
We need a sample size of at least 1698.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
You want the margin of error to be only one minute. What sample size do you need if the confidence level is 99%?
This is at least n when . So
Rouding up
We need a sample size of at least 1698.