Answer:
17.62% probability that his height will be less than 66.7 inches
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the probability that his height will be less than 66.7 inches?
This is the pvalue of Z when X = 66.7. So
has a pvalue of 0.1762
17.62% probability that his height will be less than 66.7 inches
Answer:
Step-by-step explanation:
C,D,E
Is the correct answer
Answer: The system will succeed when the first alarm rings or when the first one fails, but the second one rings. The probability of this is 0.98
The probability of system failure is 1-(probability of success)= 1-0.98= 0.02
Step-by-step explanation: