At Harriet Tubman middle school, there are 85 students in the 7th grade . The number of girls is 1 1/2 times the number of boys.
1 answer:
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Answer:
20 kg
Step-by-step explanation:
To calculate the amount of rice left we have to find 2/3 of 30
Answer:
a. E(F)=0.875
b. 99.9976%
c. P(X=2)=0.1683
Step-by-step explanation:
a. We notice that this is a binomial distribution with the probability of success;
#We are given the sample size, n=7. The Expected value is calculated as:
Hence the expectation, E(F)=0.875
b. To calculate the probability of the range of F, we need to calculate all possible outcomes of F in the given sample;
Hence, the range of F is 99.9976%
c. The probability that F=2 is calculated using the binomial distribution function as:
Hence, the probability of F=2 is 0.1683