1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alona [7]
2 years ago
8

Mr. Gray’s quiz was normally distributed with a mean of 25 and a standard deviation of 10 find z- scores for each of the followi

ng.
(a) 40 (b) 27 (c) 6
Mathematics
1 answer:
Eduardwww [97]2 years ago
8 0
Hello!

Z= x-u/sd

(a) x = 40
z = 40-25 / 10 = -15/10 = -1.5

(b) x = 27
z = 27-25 / 10 = 2/10 = 0.2

(c) x = 6
z = 6-25 / 10 = -19/10 = -1.9

Hope that helped
You might be interested in
Mr. Walker is looking at the fundraiser totals for the last five years.
balu736 [363]
$880, $896, $914, $925, and $963

median = $914
mean = (896+925+880+963+914)/5 = 4578/5 = $915.6

$915.6 - $914 = $1.6

so mean is greater than median $1.6

answer is B. second choice
<span>The mean is $1.60 greater.</span>
6 0
3 years ago
Read 2 more answers
The slope of a line is -1/3, and the y intercept is 10/3. What is the equation of the line written in slope-intercept form
REY [17]

Should be y=-1/3x+10/3

Hope this helps :)                                                                                                                                                          

7 0
3 years ago
The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated
statuscvo [17]

We want to see how long will take a healthy adult to reduce the caffeine in his body to a 60%. We will find that the answer is 3.55 hours.

We know that the half-life of caffeine is 4.8 hours, this means that for a given initial quantity of coffee A, after 4.8 hours that quantity reduces to A/2.

So we can define the proportion of coffee that Jeremiah has in his body as:

P(t) = 1*e^{k*t}

Such that:

P(4.8 h) = 0.5 = 1*e^{k*4.8}

Then, if we apply the natural logarithm we get:

Ln(0.5) = Ln(e^{k*4.8})

Ln(0.5) = k*4.8

Ln(0.5)/4.8 = k = -0.144

Then the equation is:

P(t) = 1*e^{-0.144*t}

Now we want to find the time such that the caffeine in his body is the 60% of what he drank that morning, then we must solve:

P(t) = 0.6 =  1*e^{-0.144*t}

Again, we use the natural logarithm:

Ln(0.6) = Ln(e^{-0.144*t})

Ln(0.6) = -0.144*t

Ln(0.6)/-0.144 = t = 3.55

So after 3.55 hours only the 60% of the coffee that he drank that morning will still be in his body.

If you want to learn more, you can read:

brainly.com/question/19599469

7 0
2 years ago
The diagonals of rectangle ABCD meet at O. If AO = ( 2+3) cm and
wlad13 [49]

law

Step-by-step explanation:

law of physics hope it helps

plz Mark me as brainliest

3 0
2 years ago
What is the volume of the triangular prism in cubic centimeters ?
Ksivusya [100]
Well not getting any of the answers :/ i get 1184
5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the missing reason in step 5? Statements Reasons 1. ABCD is a kite 1. given 2. AB ≅ BC, BP ⊥ AC 2. definition of kite 3.
    14·2 answers
  • SOMEONE PLEASE HELP!!!!!!!!!!!!!!!!!!1
    13·2 answers
  • What is the distance between A (1, 1) and B (7, -7)
    5·1 answer
  • A proportional relationship is formed when y=1 and x=-4 what is the value of x when y=4
    8·1 answer
  • Please help and no links to stuff bc they don't work ​
    9·1 answer
  • I need help with this go to the screenshot below plz
    13·2 answers
  • Seconds, meters minutes
    13·1 answer
  • Akash left his house and walked west 7 kilometers
    7·1 answer
  • PLS HELP ASAP An artifact is 4 times older than an antique book. In 200 years the artifact will be 3 times older as the book. Ho
    11·2 answers
  • 3 is multiplied by the difference of 7 and a number
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!