Answer: 0.14
Step-by-step explanation:
Given: Mean :
In minutes , Mean :
The exponential distribution function with parameter is given by :-
The probability of waiting more than 30 seconds i.e. 0.5 minutes is given by the exponential function :-
Hence, the probability of waiting more than 30 seconds = 0.14
The percentage of the snakes is longer than 16.6 in. with a mean of 15 in. and a standard deviation of 0.8 in. is 2.275%.
<h3>What is a normal distribution?</h3>It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.
The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.
The lengths of a particular snake are approximately normally distributed with a given mean = 15 in. and standard deviation = 0.8 in.
Then the percentage of the snakes is longer than 16.6 in. will be
Then we have
More about the normal distribution link is given below.