Mrs. Baker conducted a survey in her classroom to determine what the students preferred to do during the summer break. Her surve
y revealed that 21 out of 30 students preferred to go swimming during the summer. If the school has a total of 1200 students, how many do you predict might enjoy swimming during the summer break?
2 answers:
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Answer:
The correct choices are; B,C,E, and F.
Step-by-step explanation:
The given equation is;
We solve for m to obtain:
We also solve the remaining equations to see which ones give the same result.
A:
B:
C:
D:
E:
F:
The equivalent equations are; B,C,E, and F.
Answer:
B) 0.894
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given interval.
A local animal rescue organization receives an average of 0.55 rescue calls per hour.
This means that
Probability that during a randomly selected hour, the organization will receive fewer than two calls.
In which
Answer:
95
Step-by-step explanation:
let x be his mark in the fourth test, then
mean = = 83 ( multiply both sides by 4 )
83 + 81 + 73 + x = 332
237 + x = 332 ( subtract 237 from both sides )
x = 95