Step-by-step explanation:
Note: Question does not indicate if probability required is for weight to exceed or below 3000 lbs. So choose appropriate answer accordingly (near the end)
Using the usual notations and formulas,
mean, mu = 3550
standard deviation, sigma = 870
Observed value, X = 3000
We calculate
Z = (X-mu)/sigma = (3000-3550)/870 = -0.6321839
Probability of weight below 3000 lbs
= P(X<3000) = P(z<Z) = P(z<-0.6321839) = 0.2636334
Answer:
Probability that a car randomly selected is less than 3000
= P(X<3000) = 0.2636 (to 4 decimals)
Probability that a car randomly selected is greater than 3000
= 1 - P(X<3000) = 1 - 0.2636 (to 4 decimals) = 0.7364 (to 4 decimals)
Answer:2.5km
Step-by-step explanation:
If you cover 20km in 8 hours
Then 1 hour is 20/8=2.5
Yuto is correct because he isolated the variable correctly and reversed the inequality symbol.
x < 3
Answer & Step-by-step explanation:
1) 4x
2) y-8
3) 6/x
4) 12-y
5) y+9
6) 5^2
7) x^4
8) 9+n
9) 64-y
10) 12/n
11) x^2/7
12) x-8=22
13) 2a-b^2
14) 12-ab
The correct choices based on the integers are: 1a, 2b, 3d, and 4c.
In the question, we are asked to match the scenarios to their corresponding boundaries.
- miles traveled by a car in one hour: this can be non-negative numbers as the distance traveled by a car cannot be negative, but it is not infinitely possible, making the right option a. numbers between 0 and 70.
- average Celsius temperature in Antarctica: is mostly negative, and even if positive, very low. making the right option b. numbers between -100 and 20.
- amount of money owed on a car: this can be any non negative number without limit, making the right option d. no negative numbers.
- age when a baby takes their first step: as its an age it wont be a negative number, and its a baby age so it will be very small, making the right option, c. no negative numbers and positive numbers less that 2.
Thus, the correct choices based on the integers are: 1a, 2b, 3d, and 4c.
Learn more about integers at
brainly.com/question/12399107
#SPJ1
