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
yan [13]
3 years ago
15

The true length of recovery for patients with knee surgery is normally distributed with a mean of 123 days and a standard deviat

ion of 1 day. What proportion of the patients will recover between 121 and 124 days?
Mathematics
1 answer:
azamat3 years ago
3 0

Answer:

0.81859

Step-by-step explanation:

Given that the length of recovery days for patients with knee surgery is normally distributed with :

Mean, μ = 123 days

Standard deviation, σ = 1 day

The proportion of patients that will recover with 121 and 124 days :

We obtain the Probability of Z score :

Z = (x - μ) / σ

P(Z < (x - μ) / σ) < Z < P(Z < (x - μ) / σ)

P(Z < (121 - 123) / 1) < Z < P(Z < (124 - 123) / 1)

P(Z < - 2) < Z < P(Z < 1)

Using the normal distribution table :

P(Z < 1) - P(Z < - 2)

0.84134 - 0.02275

= 0.81859

You might be interested in
What is 14.1% of the 132 mL rounded to the nearest 10th
Anastasy [175]
132 x 14.1% = 18.612


So 18.612 rounded to 18.6
5 0
3 years ago
6x/11+2= -2<br><br> what is x?<br> pls hurry I need help<br> Do NOT convert to a decimal
UNO [17]
X both sides by 11
=6x+2=-22
-2 from both sides
=6x=-24
both sides /6
=x=-3
4 0
3 years ago
Someone help please make sure the answer is right :)
Andreas93 [3]

Answer:

The answer is 2

Step-by-step explanation:

The equation =69x + 2 = 140

 = 69x = 140 - 2

69x = 138

69 divided by 69 = 138 divided by 68

x = 2

             

6 0
3 years ago
Determine the slope of the line passing through (-8,-5) and (-10,-9)
nikklg [1K]

Answer:

2

Step-by-step explanation:

y1-y2/x1-x2

6 0
2 years ago
Read 2 more answers
Add the fraction 1/2+3/18
AURORKA [14]
1/2 + 3/18 = 9/18 + 3/18 = 12/18 = 2/3

3/45 + 6/50 = 1/15 + 3/25 = 5/75 + 9/75 = 14/75
8 0
3 years ago
Read 2 more answers
Other questions:
  • 2 times the difference between 49.5 and 37.5
    8·2 answers
  • Tell whether the lines are parallel perpendicular or neither Y=4x+5 Y=-1/4x+4
    10·2 answers
  • HELP!!! Need Help With Homework!
    9·2 answers
  • Which transformation shows a relfection of DEF?
    14·1 answer
  • what is the final amount if 2024 is increased by 17% followed by a 15% decrease give your answer rounded to DP.
    11·2 answers
  • A laboratory tested 85 chicken eggs and found that the mean amount of cholesterol was 190 milligrams. Assume that the sample sta
    13·1 answer
  • the equation of line wx is y = -2x - 5. write an equation of a line perpendicular to line wx in slope-intercept form that contai
    15·1 answer
  • Which is the graph of y=[x]-2?
    9·1 answer
  • The expression 52 - 4 of (17 - 12) + 4 × 7 is equal to<br> 70<br> 60<br> 50<br> 48
    5·1 answer
  • Thomas invested $1498.00 at 6% simple interest per annum calculate How long it will be before his investment earns $449.40
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!