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Aloiza [94]
3 years ago
14

You are taking a multiple choice quiz that consists of five questions. Each question has four possible answers, only onw of whic

h is correct. To complete this quiz, you randomly guess the answer to each question. Find the probability of guessing exactly 3 answers correctly.
Mathematics
2 answers:
Dahasolnce [82]3 years ago
6 0

Answer:

60% is the answer. Not pretty sure

Eduardwww [97]3 years ago
4 0

Answer:

3/20

Step-by-step explanation:

You're taking a 5 question quiz w/ 4 options but 1 correct answer. then guessing 3 correctly would be  3 out of 20.

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kiruha [24]
100/1 is the probability
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3 years ago
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SAT math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114.
nadezda [96]

Hey there mate :)

Analysis :

401 = 515 - 114 = u - 6

And

173 = 515 - 3.114 = u - 36

=  \frac{p(u - 36 < u < u + 36) - p(u - 6 < u < u + 6)}{2}

=  \frac{99.73percent - 68.21percent}{2}

=  \frac{31.46percent}{2}

= {15.73percent}

Then, calculating,

u - 26 = 515 - 2 \times 114 = 287

And

u + 26 = 515 + 2 \times 114 = 743

Then,

The \: Range = (287,743)

Final Answers :-

<u>1</u><u>5</u><u>.</u><u>7</u><u>3</u><u> </u><u>%</u>

<u>(</u><u>2</u><u>8</u><u>7</u><u>,</u><u>7</u><u>4</u><u>3</u><u>)</u>

~Benjemin360

3 0
3 years ago
Expand the following 4 (x - 1)
RSB [31]

Answer:

4x - 4

Step-by-step explanation:

4 × x = 4x

4 × -1 = -4

4x - 4

7 0
3 years ago
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A person wishes to mix coffee worth ​$9 per lb with coffee worth ​$3 per lbto get 240 lbsof a mixture worth $5 per lbHow many po
Nimfa-mama [501]
In order to get $5 per pound, you need a ratio of 1:2. One $9 for every two $3 will get you $5 per pound, since 9 + 3 + 3 is 15, divided by 3 pounds is $5. For 240 pounds, divide by three (since there is one $9 and two $3). This is 80 times the 3 pounds at $5.
Therefore, 1 × 80 is 80 pounds of $9 coffee, and 2 × 80 is 160 pounds if $3 coffee. which totals 240 pounds at $5 per pound.
8 0
3 years ago
PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!!!
Stella [2.4K]

Answer: the second bubble down the first row


Step-by-step explanation:

when you plan the coordinate you need to use 1,2,3,4 to get the simplest answers.

5 0
4 years ago
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