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
ozzi
3 years ago
13

The amount of time it takes to see a doctor a CPT-Memorial is normally distributed with a mean of 33 minutes and a standard devi

ation of 12 minutes. What is the Z-score for a 42 minute wait?
Use the following information to find the Z- score.



⎯⎯⎯⎯⎯
X
¯
⎯⎯⎯⎯⎯
X
¯
= 82


μ

μ
= 89


σ

σ
= 1

n = 22





Round your answer to two decimal places.





Round your answer to two decimal places.
Mathematics
1 answer:
Eva8 [605]3 years ago
7 0

Answer:

a) <em>Z-score = 0.75</em>

b) <em>Z-score = -32.833</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that mean of the Population = 33

Given a standard deviation of the Population = 12

Let 'X' be a random variable in a normal distribution

Let 'X' = 42

<u><em>Step(ii):-</em></u>

<em>      </em>Z = \frac{x-mean}{S.D}<em></em>

<em>     </em>Z = \frac{42-33}{12} = 0.75<em></em>

<u><em>Step(iii):-</em></u>

<em>Given that mean of the Population = 89</em>

Given a standard deviation of the Population = 1

Let 'X' be a random variable in a normal distribution

Let 'X⁻ = 82

<em>   </em>Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }<em></em>

<em>     </em>Z = \frac{82-89}{\frac{1}{\sqrt{22} } } =  -32.833<em></em>

<em>Z-score = -32.833</em>

<em></em>

You might be interested in
2=-7/4+1/4x I need help!!
DochEvi [55]

Answer:

x = 15

Step-by-step explanation:

2 = -7/4 + 1/4x

+7/4  +7/4                 Add 7/4 to both sides

15/4 = 1/4x                Divide both sides by 1/4

15 = x

If this answer is correct, please make me Brainliest!

3 0
3 years ago
What is x? 6x-35+3x+53
Ulleksa [173]

Answer:

x = 88/3 = 29.333

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE NEED HELP PLZ
never [62]

Answer:

Step-by-step explanation:

Hi, saw your comments, TY :)

this is super tricky b/c they tell us at the top that the triangles are similar so we have to know that we can use that triangle relation to make an equation. It just seem like to me, that you'd not see this  "connection"  where

the smaller triangle is CDE and the bigger one is QPR , so the side can be the lower case of those letters..  the side opposite of the angle is the lower case letter like the angle, soo

p = 2x + 16

r = 33

e = 8

c = 6

then the triangles have that similar triangle relation, of

p = e

r = c

so the fractional relations ship between  e/p  = c /r  you could also make it work by doing  p/e = r/c   but.. you have to keep the bigger triangle and smaller one in the same place for each fraction.  So it's important to keep that clear, which is which

let's use the fractions this way

p/e = r/c  , it seems easiest to me, plug in the values,  

2x + 16 / 8 = 33 / 6  ( now some algebra,  where all mistakes happen :P)

2x + 16 = 8 ( 33 / 6 )   ( times 8 on both sides )

2x + 16 = 4 ( 33 / 3 )         ( I just reduced by 2 )

2x + 16 = 4 ( 11 )  

2x + 16 = 44

2x  = 44 - 16

2x = 28  

x = 14                  ( divide by 2 on both sides )

Yay,  you can check to see if it's right by plugging 14 in for x and seeing if the  p/e = r/c relationship works, I did, and it does :P  but try it just for practice :)  

4 0
3 years ago
Jack jogs and rides his bike for a total of 75 minutes every day. He rides his bike for 15 minutes longer than he jogs. Part A:
ivolga24 [154]

Jack jogs for 30 minutes and he rides his bike for 45 minutes

Let x represent the number of minutes jogged and y represent the number of minutes that he ride his bike.

Jack jogs and rides his bike for a total of 75 minutes every day. hence:

x + y = 75   (1)

He rides his bike for 15 minutes longer than he jogs. hence:

y = x + 15

-x + y = 15    (2)

Solving equations 1 and 2 simultaneously gives:

x = 30, y = 45

Jack jogs for 30 minutes and he rides his bike for 45 minutes

Find out more on equation at: brainly.com/question/13763238

6 0
2 years ago
Read 2 more answers
What is the ratio of the volume of cylinder with base radius 3 and height 6
vovikov84 [41]
Answer

169.65


Explanation

8 0
3 years ago
Other questions:
  • The graph of y=x^2 is reflected in the x-axis and translated 3 units right and 2 units up. Write an equation for the function in
    6·1 answer
  • ( 20points please ) -22+(-16)=
    6·2 answers
  • A boy rolls down a hill on a skateboard. At time = 4 seconds, that boy has rolled 6 meters from the top of the hill. At time = 7
    12·1 answer
  • Amad was curious if triangles \triangle ABC△ABCtriangle, A, B, C, and \triangle EDF△EDFtriangle, E, D, F were congruent. He was
    7·1 answer
  • Y+3 1/2=6 help pleaseee
    12·1 answer
  • Order the number from least to greatest<br> -1.4,-3/5,9/2,0.9
    13·1 answer
  • 10-kg batch of a food product has a moisture content of175% dry basis. Calculate the amount of water to beremoved from the produ
    11·1 answer
  • Is 4/8 closer to 0 or 1 and why
    7·2 answers
  • I need help finding a measure
    9·1 answer
  • I WILL GIVE 100 POINTS TO ANYONE WHO CAN HELP ME WITH THIS PROBABILITY QUESTION
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!