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Ivanshal [37]
2 years ago
6

Due in half hour, please help!

Mathematics
1 answer:
Mamont248 [21]2 years ago
6 0

Answer:

Your answer will be 69

Step-by-step explanation:

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For a given population of high school seniors, the Scholastic Aptitude Test (SAT) in mathematics has a mean score of 500 with a
tresset_1 [31]

Answer:

The probability that a randomly selected high school senior's score on mathematics part of SAT will be

(a) more than 675 is 0.0401

(b)between 450 and 675 is 0.6514

Step-by-step explanation:

Mean of Sat =\mu = 500

Standard deviation = \sigma = 100

We will use z score over here

 What is the probability that a randomly selected high school senior's score on mathe- matics part of SAT will be

(a) more than 675?

P(X>675)

Z=\frac{x-\mu}{\sigma}\\Z=\frac{675-500}{100}

Z=1.75

P(X>675)=1-P(X<675)=1-0.9599=0.0401

b)between 450 and 675?

P(450<X<675)

At x = 675

Z=\frac{x-\mu}{\sigma}\\Z=\frac{675-500}{100}

Z=1.75

At x = 450

Z=\frac{x-\mu}{\sigma}\\Z=\frac{450-500}{100}

Z=-0.5

P(450<X<675)=0.9599-0.3085=0.6514

Hence the probability that a randomly selected high school senior's score on mathematics part of SAT will be

(a) more than 675 is 0.0401

(b)between 450 and 675 is 0.6514

6 0
2 years ago
What is the value of log subscript 4 baseline 16? 1 2 4 8
dimulka [17.4K]

~\log_4 16 \\\\= \log_4 4^2\\\\=2 \log_ 4 4~~~~~~~~~~~~~~~~~~~~~~~~;[\log_b m^n = n \log_b m]\\\\=2 \cdot 1~~~~~~~~~~~~~~~~~~~~~~~~~~~~;[ \log_b b =1]\\\\=2

8 0
1 year ago
Which of the following means the same as 2(3x – 4) ?
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Answer:

6x - 8

Step-by-step explanation:

2(3x – 4)

Distribute

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6x - 8

8 0
3 years ago
Marie is bringing bagels and cream cheese to school as a birthday snack for her class. The cost of b bagels and c packages of cr
emmasim [6.3K]

Answer:

$30.50

Step-by-step explanation:

b = bagels

c = cream cheese

<u>Given</u>

b = 30

c = 2

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0.85b+2.5c

0.85(30) + 2.5(2)

25.5 + 5

30.5

4 0
3 years ago
Which of the following shows the correct solution steps and solution to 2x + 7 = -11
Sonja [21]

Answer: = −9

Step-by-step explanation:

6 0
3 years ago
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