Answer:
-10416
Step-by-step explanation:
a = 4
r = -5
geometric series:
Determine which term = -12500:
Using geometric sum series formula:
Therefore,
N a recent flu epidemic, the number of flu cases increased by 40% each week. There were 3,000 flu cases during the first week of
2 answers:
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It wouldn't let me post the answer. See images for the answer and explanation
Answer: 0.0228
Step-by-step explanation:
Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-
If the distribution of finish times is approximately bell-shaped and symmetric, then it must be normally distributed.
Let X be the random variable that represents the finish times for this event.
z score :
Now, the probability of runners who finish in under 19 minutes by using standard normal distribution table :-
Hence, the approximate proportion of runners who finish in under 19 minutes = 0.0228