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
svp [43]
3 years ago
12

A university conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the

study, 1.9% of the 457 members of a fitness association died. We are interested in the proportion of people over 50 who ran and died in the same eight-year period.
NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)
Define the Random Variables X and P', in words. which of the following?
a.) X is the proportion of people who ran and died in the eight-year period, and P' is the number of people who ran and died in the eight-year period.
b.) X is the proportion of all runners that die, and P' is the number of all runners that die.
c.) X is the number of people who ran and died in the eight-year period, and P' is the proportion of people who ran and died in the eight-year period.
d.) X is the number of all runners that die, and P' is the proportion of all runners that die.
Mathematics
1 answer:
mestny [16]3 years ago
4 0

Answer:

From given data, University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 1.9% of the 454members of 50 plus fitn

You might be interested in
How far is the planets is away from the sun
Harlamova29_29 [7]
Earth is 92.96 million
Mars is 141.6 million
Venus is 67.24 million
Jupiter is 483.8 million
Mercury is 35.98 million
Neptune is 2.795 billion
Saturn is 888.2 million
Uranus is 1.787 billion
 

8 0
3 years ago
The center of the circle is O. Find the measure of angle BDE *
lorasvet [3.4K]

Answer:

90 (angle in a semicircle)

7 0
4 years ago
Read 2 more answers
Which of the following inequalities matches the graph? (1 point)
ExtremeBDS [4]

Answer:

Answer is D 5x-y>= 1 :)

Step-by-step explanation:

4 0
3 years ago
What is x given ABC~DBE.<br> Show your work
alexandr1967 [171]

x = 37.5 (or) \frac{75}{2}

Solution:

Given \triangle A B C \sim \triangle D B E

AC = 50, DE = 30, EC = 25, BE = x, BC = 25 + x

To find the value of x:

Property of similar triangles:

If two triangles are similar then the corresponding angles are congruent and the corresponding sides are in proportion.

$\frac{BE}{BC} =\frac{DE}{AC}

$\frac{x}{25+x} =\frac{30}{50}

Do cross multiplication, we get

50x=30(25+x)

50x=750+30x

Subtract 30x from both sides of the equation.

20x=750

Divide by 20 on both sides of the equation, we get

x = 37.5 (or) \frac{75}{2}

Hence the value of x is 37.5 or \frac{75}{2}.

5 0
4 years ago
Find the perimeter of the figure to the nearest hundredth.
Kobotan [32]

Answer:

65.12 mm

Step-by-step explanation:

Circumference of semicircle = 8π mm

Perimeter = (40 + 8π) = 65.12 mm

7 0
3 years ago
Other questions:
  • Plz help w this (it’s not that hard)25+ points
    8·1 answer
  • the old time train museum is raising the price of tickets for train rides. tickets used to cost $4.80 each. the new tickets pric
    6·2 answers
  • Which of the following describes a simple event?
    9·1 answer
  • HELP I NEED 8 DONE TODAY <br> btw this is a writing assignment
    9·1 answer
  • Silas claims that the equation y=2+mx, where m is a real number, represents a function whose graph is a straight line.
    7·2 answers
  • Plz help it’s due tonight!!!
    12·1 answer
  • Select ALL of the trips that would take 2 hours.
    6·2 answers
  • Choose the answer that represents the product below as a exponential expression. (-6) (-6) (-6) (-6).(-6)​
    8·1 answer
  • An object has a mass of 560 kg and a volume of 8 m3. find the density of the object in kg/m3.
    6·1 answer
  • On Wednesday 28% of the customers who bought gas at a gas station made additional purchases. There were 300 customers who bought
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!