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)

5 0

3 years ago

Read 2 more answers

tara needs 216 blocks. each box had 10 bags. each bag has 10blocks how many boxes bags and single blocks does she need to make 2

Fed [463]

2 boxes, 1 bag, and 6 blocks

4 0

4 years ago

Read 2 more answers

A company rents water tanks shaped like cylinders. Each tank has a radius of 3 feet and a height of 2 feet. The cost is $ 4 per

Alexxandr [17]

Answer:

The total cost of the cylindrical tank is $226.28

Step-by-step explanation:

Dimensions of the tank are: radius = 3 ft , height = 2 ft

Cost per cubic foot = $4

Now, total volume of the cylindrical tank = $\pi \times r^{2}h$

Here, take π = 22/7

So, Volume = $\frac{22}{7} \times (3)^{2} \times (2) = \frac{22 \times 9 \times 2}{7} = \frac{396}{7} = 56.57 cubic ft$

So, the <u>volume of the tank = 56.57 cubic feet. </u>

Now, cost per cubic foot = $4

Hence, the total cost of the tank = Total Volume of the tank x cost per foot

= 56.57 x 4 = $226.28

So, the total cost of the cylindrical tank is $226.28

5 0

3 years ago

PLEASE ANSWER ASAP!!!!!!!!

charle [14.2K]

The linear velocity of the Ferris wheel in inches per second is 18.9 inches/second.

<h3>What is the speed of an object?</h3>

The speed of an object is the ratio of the total distance covered by the object and the total time taken by the object to complete that distance.

Here, the radius of the Ferris wheel is (r) = 30 feet.

The circumference of the wheel is

C= 2πr

C= 2 × π × 30 feet

C= 60π feet

Here, the Ferris wheel completes 7 revolutions.

Therefore, it covers the linear distance of

D= 7 × circumference of the wheel

D= 7 × 60π feet

D= 420π feet

Now, the Ferris wheel took 14 minutes to complete 420π feet.

Therefore, the speed of the wheel is

S= (420π/14) feet/minute

S= 30π feet/minute

S= (30π × 12)/60 inches/second

S= 6π inches/second

S= 18.9 inches/second

Therefore the linear velocity of the object will be 18.9 inches/second

Learn more about the speed of an object here: brainly.com/question/16123156

#SPJ1

6 0

2 years ago