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
Ugo [173]
3 years ago
11

According to a recent pol, 29 % of adults in a certain area have high levels of cholesterol. They report that such elevated leve

ls "could be financially devastating to the regions healthcare system" and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 205 mg/dL, with a standard deviation of about 25 mg/dL, and are roughly Normally distributed. If the cholesterol levels of a sample of40 healthy adults from the region is taken,What is the probability that the mean cholesterol level of the sample will be between 200 and 210
Mathematics
1 answer:
iVinArrow [24]3 years ago
6 0

Answer:

Step-by-step explanation:

The mean value μ = 205  , standard deviation of population σ = 25

no of people n = 40

standard deviation of sample of 40 people = σ / √n

σ₁ = 25 / √ 40 = 3.95

probability between 200 and 205

P ( 200 < X < 205 ) = P ( Z= (210 - 205)  / 3.95  -  P ( Z= (200 - 205)  / 3.95

= P ( Z = + 1.26 ) - P ( - 1.26 )

= .8962 - .1038

= .7924

Probability is 79.24 % .

You might be interested in
A film ends at 1.05 a.m and lasts for 1 hour 45 min. At what time does the film start?
Ad libitum [116K]

u will have to add the two

1hr 45mins + 1:05

remember add hrs to hrs and minutes to minutes

1+1 =2

45+5=50

which means the movie started at 2:50 am

and to verify ur answer subtract 2:50 from 1:05

= 1hrs 45 mins

<em>Answer</em><em>=</em><em> </em><em>2</em><em>:</em><em>5</em><em>0</em><em> </em><em>am</em><em> </em>

6 0
2 years ago
Read 2 more answers
For which value of x must the expression √37x be further simplified?
vekshin1

Answer:

37x

Step-by-step explanation:

Since it has a square root you can square it to get rid of it so your final answer is 37x

5 0
3 years ago
Sally ate 1/6 of a fruit pie and gave 1/5 of the remainder to her sister. What fraction of fruit pie did she give away? hURYY
Zigmanuir [339]

Answer:

Milan puts 1/4 of her lawn-mowing money in savings and uses 1/2 of the remaining money to pay back her sister. If she has $15 left

Step-by-step explanation:

3 0
3 years ago
A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num
yKpoI14uk [10]

Answer: hypotenuse = c^{2} + b^{2}

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side (s_{1},s_{2}) of the right triangle, .i.e.:

h^{2} = s_{1}^{2} + s_{2}^{2}

In this question:

s_{1} = c^{2}-b^{2}

s_{2} = 2bc

Substituing and taking square root to find hypotenuse:

h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}

Calculating:

h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}

h=\sqrt{c^{4}+b^{4}+2b^{2}c^{2}}

c^{4}+b^{4}+2b^{2}c^{2} = (c^{2}+b^{2})^{2}, then:

h=\sqrt{(c^{2}+b^{2})^{2}}

h=(c^{2}+b^{2})

Hypotenuse for the right-angled triangle is h=(c^{2}+b^{2}) units

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=3x%20-%202y%20%3D%2043x%20%2B%202y%20%3D%208" id="TexFormula1" title="3x - 2y = 43x + 2y = 8"
den301095 [7]

3x - 2y = 8 +

===》 46x = 16

43x + 2y = 8

x = 16/46

x = 8/23

______________________________

3x - 2y = 8

3(8/23) - 2y = 8

24/23 - 2y = 8

2y = 24/23 - 8

y = 12/23 - 4

y = 12/23 - 92/23

y = - 80/23

5 0
2 years ago
Other questions:
  • Simplify the expression 6^3 +5(4-2)
    10·1 answer
  • Greg and Josh want to go whitewater rafting in 3 weeks. Josh is able to save the $480 he needs to go on the trip by saving the p
    9·2 answers
  • Joe made muffins and 2/3 of a blue berry muffins. The rest were corn. If he made 5 dozen muffins how many corn muffins did he ma
    12·2 answers
  • PLEASE HELP!!! ITS TWO PARTS
    6·1 answer
  • Can u help me find the value of "y": 3y= 6x+3x+36
    7·1 answer
  • Consider the graph shown.
    12·1 answer
  • 1+(-2-5)^2+(14-17)×4
    15·1 answer
  • I need help on this and more so can sb help me ?..
    10·1 answer
  • Sjdjwkfmwkfkekfmkdekjejwje
    9·2 answers
  • 7TH GRADE MATH. PLS HELP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!