The length of a social media interaction is normally distributed with a mean of 3 minutes and a standard deviation of 0.4 minutes.

what is the probability that an interaction lasts longer than 4 minutes?

1)0.0045254
2)0.043351
3)0.0095254
4)0.006209

  4) 0.0062097

Step-by-step explanation:

Given : The length of a social media interaction is normally distributed with a mean of minutes and a standard deviation of minutes.

Using the formula , , the z-value corresponding to x=4 will be :-

Using the standard normal distribution table for z-value , the  probability that an interaction lasts longer than 4 minutes will be :-

Hence, the probability that an interaction lasts longer than 4 minutes = 0.0062097

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.