3 years ago

Is what I did right?

Mathematics

2 answers:

Ksju [112]3 years ago

6 0

Yes, the answer and your working out to the question is correct

yuradex [85]3 years ago

3 0

Yes you got the problem right

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Consider the probability that more than 99 out of 157 software users will not call technical support. Assume the probability tha

Rainbow [258]

Answer:

$P(x>99)= 0.468$

Step-by-step explanation:

From the question we are told that:

Sample size 157

Sample mean

$\=x =np$

$\=x =157*0.56$

$\=x = 87.92$

Generally the equation for Standard deviation is mathematically given by

$\sigma=\sqrt{npq}$

$\sigma=\sqrt{157*0.56*0.44}$

$\sigma =6.22$

Therefore

$P(x>99)=P(z>(\frac{99.5-87.92)}{6.22})$

$P(x>99)=P(z>1.86)$

$P(x>99)= 0.468$

8 0

3 years ago

Kate baked a rectangular cake for a party she used 42 inches of frosting around the edges of the cake if the cake was 9 inches w

Leno4ka [110]

9 + 9 = 18
42 - 18 = 24
24 / 2 = 12
the length is 12 inches

7 0

3 years ago

Klara makes a salad from the salad bar at the supermarket. It cost $6.29. She pays with a $10 bill. How much change does she get

Alex

Answer:

Step-by-step explanation:

You need to subtract $10.00 - $6.29

10.00

- 6.29

---------------

3.71

Answer: $3.71

6 0

4 years ago

Malaya creates a password as follows: letter, number, letter, special character, number Assuming that there are 12 special chara

Tems11 [23]

Hey there!

I'm not too sure about this question, but I'm gonna guess 12 or 15

I hope this helps out a little bit!

Always remember, you are a Work Of Art!
- Nicole <3 :)

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3 years ago

Right answer gets brainlist

dusya [7]

Answer:

answer: 136

Heres the answer! Hope that helps!

5 0

3 years ago