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Eddi Din [679]
3 years ago
9

Math SAT scores are Normally distributed with mean µ=500 and standard deviation σ=100 . The curve is displayed above. What perce

ntage of the SAT Math scores are less than one standard deviation above the mean?
Mathematics
1 answer:
pentagon [3]3 years ago
6 0

Answer:

Step-by-step explanation:

mean µ  =  500

standard deviation  σ  =   100

Required P ( X < µ + σ )

=  P ( X < 500 + 100  )

= P ( X < 600 )

= P [Z < (X - µ) / σ  ]

=  P [Z < (600 - 500) / 100  ]

= P [Z < + 1  ]

= .8413

In terms of percent the probability is 84.13 % .

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4 is 1/4 of what number? Plzzzzzz help
WARRIOR [948]

Answer:

16

Step-by-step explanation:

to reverse the division  meaning the fraction, we multiply 4 by 4:

4 times 4=16

to check, divide:

16/4=4

i hope this helps u pls give a brainliest and a thx ;)

8 0
3 years ago
First pirson to type 1 i will see if i can give brainlist but idk how bot i will try
amm1812

Answer:

1

Step-by-step explanation:

you asked to type 1

3 0
3 years ago
Cooper was out at a restaurant for dinner when the bill came. His dinner came to $18. After adding in a tip, before tax, he paid
ozzi

Answer: Copper paid 13%

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The surface areas of two similar solids are 384 yd squared and 1057 yd squared The volume of the larger solid is 1795. What is t
Arturiano [62]
This is the concept of scale factors, we are required to calculate for the volume of the smaller solid if the larger solid has a volume of 1975.
Area scale factor=(linear scale factor)^2
thus;
Area scale factor=(area of larger solid)/(area of smaller solid)=1057/384
linear scale factor=√(1057/384)=5.7019
the volume scale factor=(linear scale factor)^3=[volume of larger solid]/[volume of smaller solid]
The volume scale factor=(5.7019)^3=185.3772
therefore;
volume of smaller solid=[volume of larger solid]/[volume scale factor]

=1795/185.3772
=9.683 
The answer is 9.683 yd^3

5 0
3 years ago
Can you name the trigonometric expression that is equivalent to the following expression 1/secant of x?
Arlecino [84]
The answer to your question is:  Yes, I can.


You haven't asked for the trigonometric expression, but here it is anyway:

The  <u>cosine</u>  function is the reciprocal of the secant function.
8 0
3 years ago
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