First simplify then solve.

We find there are two solutions. In your case the correct answers are A, C, D
Hope this helps.
r3t40
Hope this helps.
r3t40
Answer:
0.006 is the probability that the record will be broken in next year.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 62 seconds
Standard Deviation, σ = 0.8 seconds
We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.
Formula:
The record will be broken if the time is less than 60 seconds.
P(time is less than 60 seconds)
P(x < 60)
Calculation the value from standard normal z table, we have,

Thus, 0.006 is the probability that the record will be broken in next year.
Answer:
C. The claim is not plausible because 10 falls outside of the interval.
Answer:
16
Step-by-step explanation: