The probability that the mean race time is less than 4. 3 minutes is 0.3534.
<h3>
Normal distribution curve</h3>
A normal distribution curve can be used to determine the probability of selecting a mean race time less than 4.3 minutes.
<h3>In normal distribution curve</h3>
- Mean = median = 50%
- 1 standard deviation below the mean (M - d) = 16%
<h3>Time of race at 1 standard deviation below the mean</h3>
5.18 - 1(2.34) = 2.84 minutes
4.3 minutes is greater than 2.84 minutes but less than 5.18 minutes.
Apply interpolation method to determine the probability corresponding to 4.3 minutes.
5.18 ---------------- 50%
4.3 ------------------- ?
2.84 ----------------- 16%
x = 0.37
The area of normal distribution curve is not equal at all points, it is more towards the center and less towards the left. The probability will shift little to left, with a value of 36% or 35%.
Thus, the probability that the mean race time is less than 4. 3 minutes is 0.3534.
Learn more about normal distribution curve here: brainly.com/question/14644201
Answer:
Explanation:
The frequency of an electromagnetic wave is given by:
where
is the speed of light
is the wavelength of the wave
For the first wave,
so the corresponding frequency is
For the second wave,
so the corresponding frequency is
So the difference between the two frequencies is
Radius of Earth is given as
now here the height from the surface of earth is same as that of radius
now here the acceleration due to gravity at this height is given as
now the force of gravity on the given object will be
<em>so the force of gravity on it is 1.225 N</em>
Answer:
Gravity
Explanation:
Thats the answer bucko. Gives the brainliest or I die