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kiruha [24]
3 years ago
9

A single card is drawn from a standard 52 card deck.

Mathematics
1 answer:
Mandarinka [93]3 years ago
7 0

Step-by-step explanation:

probability of 6 of hearts = 1/52

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you.

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The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with a mean of 6.7
hram777 [196]
We need to work out the z-value of each question to work out the probability

Question a)

We have
X = 5 minutes
The mean, μ = 6.7 minutes
Standard deviation, σ = 2.2 minutes
z-score = (X - μ) / σ = (5 - 6.7) / 2.2 = -0.77

We want to find the probability of z < -0.77 so we read the z-table for the value of z on the left of -0.77 we have the probability P(z< -0.77) = 0.2206

The table is attached in picture 1 below

The probability of assembly time less than 5 minutes is 0.2206 = 22.06%

Question b)

z-score = (10-5) / 2.2 = 2.27

Reading the z-table for P(z<2.27) = 0.9884
The table reading is shown in the second picture below

The probability the assembly time will be less than 10 minutes is 0.9884

We can use this information to find the probability of the assembly time will be more than 10 minutes  = 1 - 0.9884 = 0.0116 = 1.16%

Question c)

The value of z between 5 minutes and 10 minutes is

P(-0.77<z<2.27) = P(z<2.27) - P(z< -0.77)
P(-0.77<z<2.27) = 0.9884 - 0.2206 = 0.7678 = 76.78%


6 0
3 years ago
A system of two linear equations and three unknowns can be solved by:
irakobra [83]
These cannot be solved.- 3 unknowns require 3 equations 
3 0
3 years ago
Can someone please answer these ?!
katrin [286]

Answer: b and d

Step-by-step explanation:

7 0
3 years ago
HELP ME AND GIVE ME THE ANSWER I DONT NEED U TO EXPLAIN ANYTHING JUST HURRY UP
Brums [2.3K]

Answer:

x = 9.1

Step-by-step explanation:

6 0
2 years ago
Calculate the force output by the larger piston of a hydraulic lift when a force of 800 N is exerted on the smaller piston. The
Alchen [17]

answer:

<h2>F2= 5kN</h2>

step by step explanation

<em>Note the second diameter was used as 50cm and not 500cm</em>

given

F1=800N

D1=20cm

A1=πD1^2/4

=3.142*20^2/4

=314.2cm^2

D2= 50cm

A2=πD2^2/4

=3.142*50^2/4

=1963.75cm^2

The pressure applied on the smaller relative to the bigger end is expressed as

F1/A1=F2/A2

substitute we have

800/314.2=F2/1963.75

cross multiply we have

F2=800*1963.75/314.2

F2=1571000/314.2

F2=5000N

F2=5kN

The larger Force is 5kN

5 0
3 years ago
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