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krok68 [10]
3 years ago
9

-12x + 2 = -22 How do you do this?

Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

Answer:

.................................

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Here is a simple probability model for multiple-choice tests. Suppose that each student has probability p of correctly answering
Alla [95]

Answer:

a) The probability that Jodi scores 78% or lower on a 100-question test is 4%.

b) The probability that Jodi scores 78% or lower on a 250-question test is 0.023%.

Step-by-step explanation:

a) To approximate this distribution we have to calculate the mean and the standard distribution.

The mean is the proportion p=0.85.

The standard deviation can be calculates as:

\sigma=\sqrt{\frac{p(1-p)}{n} }= \sqrt{\frac{0.85*(1-0.85)}{100} }=0.04

To calculate the probability that Jodi scores 78% or less on a 100-question test, we first calculate the z-value:

z=\frac{p-p_0}{\sigma} =\frac{0.78-0.85}{0.04} =-1.75

The probability for this value of z is

P(x

The probability that Jodi scores 78% or lower on a 100-question test is 4%.

b) In this case, the number of questions is 250, so the standard deviation needs to be calculated again:

\sigma=\sqrt{\frac{p(1-p)}{n} }= \sqrt{\frac{0.85*(1-0.85)}{250} }=0.02

To calculate the probability that Jodi scores 78% or less on a 250-question test, we first calculate the z-value:

z=\frac{p-p_0}{\sigma} =\frac{0.78-0.85}{0.02} =-3.5

The probability for this value of z is

P(x

The probability that Jodi scores 78% or lower on a 250-question test is 0.023%.

6 0
2 years ago
NEED HELP ASAP ‼️‼️I BELIEVE ANSWER IS C
shutvik [7]

Answer:

I agree with your answer C!!

Step-by-step explanation:

5 0
3 years ago
Students who attend Anytown College pay either in-state or out-of-state tuition, depending on where they reside. The amount, I,
Hunter-Best [27]

Answer:

d- $6,348.75

Step-by-step explanation:

just did it got it right

8 0
2 years ago
Read 2 more answers
F(x) = x2. What is g(x)?
uranmaximum [27]

Answer:

g(x) = 1/2x^2

Step-by-step explanation:

I hope this helps

8 0
2 years ago
The length of the sides of a square is 10 meters. Find the length of the diagonals of the square
BaLLatris [955]

。☆✼★ ━━━━━━━━━━━━━━  ☾  

Use Pythagoras' theorem:

a^2 + b^2 = c^2

Sub the values in:

10^2 + 10^2 = c^2

200 = c^2

Square root to find the answer:

c = 14.14

Have A Nice Day ❤    

Stay Brainly! ヅ    

- Ally ✧    

。☆✼★ ━━━━━━━━━━━━━━  ☾

7 0
3 years ago
Read 2 more answers
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