Answer:
Step-by-step explanation:
We would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = randomly chosen values.
µ = mean
σ = standard deviation
From the information given,
µ = 9
σ = 5
1) The proportion of the population that is less than 20 is expressed as
P(x < 20)
For x = 20
z = (20 - 9)/5 = 2.2
Looking at the normal distribution table, the probability corresponding to the z score is 0.986
P(x < 20) = 0.986
2) The probability that a randomly chosen value will be greater than 6 is expressed as
P(x > 6) = 1 - P(x ≤ 6)
For x = 6
z = (6 - 9)/5 = - 0.6
Looking at the normal distribution table, the probability corresponding to the z score is 0.27
P(x > 6) = 1 - 0.27 = 0.73
Answer:
63mi/h = 0.0175 mi/sec , hope this helps you
Answer:
Leah has 15 stickers left.
Step-by-step explanation:
The total number of stickers that Leah had was 50. Leah gave 1/2 of the stickers to her sister. This means that the number of stickers that Leah gave to her sister was: 1/2 × 50 = <u>25 stickers</u>
.
Of the amount left, she gave 2/5 to her brother. This means that the number of stickers that Leah her brother was
: 2/5 × 25 = <u>10 stickers
</u>.
Therefore, the number of stickers that Leah have left for herself is
:
50 - (25 + 15)
= 50 - 35
= <u>15 stickers</u>
I hope this helps you!
Have a great day! :)
The answer to this is y=-1/2*-3+2