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Sunny_sXe [5.5K]
3 years ago
11

Using a computer or calculator that provides proportions falling below a specified z-score, determine the approximate proportion

for each of the following situations. In each case, assume the values are approximately bell-shaped. (Round your proportions to four decimal places.) A button hyperlink to the SALT program that reads: Use SALT. (a) The proportion of SAT scores falling below 420 for a group with a mean of 500 and a standard deviation of 100. -0.8 Correct: Your answer is correct. (z-score) (approximate proportion)
Mathematics
1 answer:
____ [38]3 years ago
5 0

Answer: uhhhh what

Step-by-step explanation:

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PLEASE HELP ASAP!!! 70 POINTS AND BRAINLIEST FOR FASTEST AND BEST ANSWER!!!
Novay_Z [31]

Answer:

The IQR is the best measurement of spread for games and movies.

Step-by-step explanation:

Because both seem to have outliers, we want to use IQR instead of standard deviation to determine the spread of data.

8 0
2 years ago
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Which side lengths form a right triangle?<br> Choose all answers that apply:
kkurt [141]

Answer:

All 3 are right triangles.

Step-by-step explanation:

In a right triangle c^2 = a^2 + b^2   where c is the longest side.  ( by Pythagoras).

a) 3^2 = 9, 6^2 = 36 and √27 ^ 2 = 27

36 = 9 + 27

So this is a right triangle.

b)

17^2 = 289, 15^2 = 225 and 8^2 = 64

289 = 225 + 64

Also right triangle.

c) √50 ^ 2 = 50, 5^2 = 25 and 5^2 = 25

So also right triangle.

3 0
2 years ago
Statement 1: If parallel lines have a transversal, then corresponding angles are congruent. Statement 2: A line has an infinite
Nataly_w [17]
The statement 1:"If parallel lines have a transversal, then corresponding angles are congruent" is theorem, because it has been proved. It is a logical consequence of axioms.<span>
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3 0
3 years ago
school teacher and needs 22 pieces of wood, 3 over 8 ft long, for a class project. If he has a 9-ft board from which to cut the
tiny-mole [99]

Answer:

Yes, he will have enough 3 over 8 ft pieces for his class.

Step-by-step explanation:

Given:

Number of wood required = 22

Length of each wood, l=\frac{3}{8}\textrm{ ft}

Total length of the board, L=9\textrm{ ft}

Therefore, the number of woods that can be made using the given board is given as:

\textrm{Number of woods made}=\frac{\textrm{Total length of board}}{\textrm{Length of each wood}}\\\textrm{Number of woods made}=\frac{L}{l}=\frac{9}{\frac{3}{8}}=9\times \frac{8}{3}=\frac{72}{3}=24

So, he can make 24 woods of length \frac{3}{8}\textrm{ ft} using the 9 ft board. But he has to make only 22 pieces.

Therefore, he has enough of the wood to make the required number of pieces.

3 0
2 years ago
Please lemme know soon, ty
Mrac [35]

Answer:

PHOTO IS BLACK . SO , I CAN'T ANSWER UR QUESTION

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2 years ago
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