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Komok [63]
3 years ago
5

A company uses a computer program to create coupon codes for customers to use on its website. The codes are made up from the sym

bols !, #, &, and *, as well as any letter from the alphabet.
The company uses the program to make a code, one character at a time.

What is the probability the first character is a symbol?

Enter your answer as a decimal rounded to the nearest hundredth in the box.
Mathematics
2 answers:
Sveta_85 [38]3 years ago
5 0
Probability=number of specific outcomes/total number of possible outcomes

P(symbol)=4/(4+26)  (because there are four symbols and 26 letters)

P(symbol)=4/30

P(symbol)=2/15  as a decimal

0.13  (to the nearest hundredth)
Ahat [919]3 years ago
3 0

Answer:

Answer: 0.13

Step-by-step explanation:

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I think answer is B...
6 0
3 years ago
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WARRIOR [948]

Answer:

D.

15/20, 0.75

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4 0
4 years ago
A random sample of 450 vacationers in a huge luxury resort showed that 150 were business executives. We want to create a 95% con
Zolol [24]

Answer:

p(s) = 0,33

Step-by-step explanation:

n = 450

p₀ = 150/450       p₀ = 0,33      then    q₀  = 0,67

n*p₀ = 0,33*450  =  150

n*q₀  = 0,67*450 = 301

n*p₀  and n*q₀   more than 10, we can approximate  the binomial to a Normal Distribution Distribution

a) p - p₀  = z(c) * √ (p₀q₀)/n

z(c) =  ??

CI   95 %    then α = 5 %    α = 0,05      α/2 = 0,025

z(c) = 1,96

p  =  p₀  ±  z(c) * √ (p₀q₀)/n

p  = 0,33 ± 1,96 * 0,022

p =  (  0,33 - 0,04 ;  0,33 +  0,04

p = ( 0,29  ; 0,37 )

The value of the center of the confidence Interval is 0,33

p(s) = 0,33

7 0
3 years ago
Look at the two expressions.<br><br>3x−18<br><br>3⋅(x−6)<br><br>Are the two expressions equivalent?
Ivanshal [37]
Yes because if you distribute the 3 and multiply it with 3 • x and 3• 6 you’ll get 3x-18
8 0
3 years ago
Read 2 more answers
Does anyone know this, pls?
yan [13]

Answer:

Addition property of equality

Explanation:

You are adding 7 to both sides

Hope this helps!

8 0
3 years ago
Read 2 more answers
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