Answer:
mean = 160
Variance = 156.8
Standard deviation = 12.52
Step-by-step explanation:
This is solved by the binomial distribution model for approximation.
n = number of random sample in which for this question, n= 8000
p = probability of success = 2% = 0.02
Mean of the sample = Expected value which approximates the average number of cases to expect from the larger sample chosen.
Mean = np = 0.02 × 8000 = 160
Variance = np(1-p) = 160(1-0.02) = 156.8
Standard deviation = √variance = √156.8 =12.52
The number of winners that Heather can expect is 300.
<h3>How many winners can be expected?</h3>
The first step is to determine the total number of winners to the total number of players using the information in the table.
- Total number of winners = 52 + 63 + 65 = 180
- Total number of players = 123 + 155 + 172 = 450
Ratio = 180 / 450 = 0.40
Number of winners if there are 750 players = 0.40 x 750 = 300 winners
To learn more about division, please check: brainly.com/question/194007
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Answer:
To graph this on a coordinate plane, you have to go left 10 and down to -3. On 3,2, you go right 3 then up 2.
Step-by-step explanation:
The answer to your question is 600 and 60
