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slavikrds [6]
3 years ago
6

How do you solve this?

Mathematics
1 answer:
expeople1 [14]3 years ago
7 0
Can you posted a picture
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scores on the act college entrance exam follow a bell-shaped distribution with mean 18 and standard deviation 6. Wayne's standar
WITCHER [35]

Answer:

His actual score is 15

Step-by-step explanation:

Here, we are interested in calculating Wayne’s actual score on the ACT

when we say the scores have being standardized, it means the score was reported in terms of the z-score and not the initial raw scores.

Now, mathematically, for the scores to have a negative z-score, it means it is actually below the mean.

The formula for the z-score or standard score is given below;

z-score = (x - mean)/SD

where in this case, x = ? which is the score we are looking for , z-score = -0.5 , mean score = 18 and standard deviation of the scores = 6

So, substituting these values into the z-score equation, we have;

-0.5 = (x-18)/6

x-18 = 6(-0.5)

x -18 = -3

x = -3 + 18

x = 15

7 0
3 years ago
Question 28
alexandr402 [8]

Answer:

Given Rate of interest is r=8%=0.08

Principal Amount is A=5,000

Time is t years

Interest is compounded yearly twice ⟹n=2

Amount =P(1+

n

r

)

nt

=5000×(1+

2

0.08

)

2t

=5,408

(1.0816)

t

=

5000

5408

⟹t=1

7 0
3 years ago
C.) of a total of $10,000, part was invested at 10% simple interest and the remainder at
nlexa [21]

Answer:

$3,500 at 10% and $6,500 at 7%.

Step-by-step explanation:

M * 10% + (10000 - M) * 7% = 805

0.1M + 700 - 0.07M = 805

0.03M = 105

M = 3500

4 0
2 years ago
A bag contains 3 blue and 2 green marbles. What is the probability of drawing a blue marble folowed by a green marble, without r
nadya68 [22]

3 out of 5 percent chance

8 0
3 years ago
5. Complete the following equation using &lt; &gt;, or =<br> 7___24/4
Zepler [3.9K]

Answer:

7 > 24/4

Step-by-step explanation:

7 __ 24/4

simplify

7 __ 6

7  > 6

3 0
3 years ago
Read 2 more answers
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