answer.
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
galben [10]
1 year ago
8

The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per

minute and a standard deviation of 6 beats per minute. Assuming a 90% confidence level (90% confidence level = z-score of 1.645), what is the margin of error for the population mean?
Mathematics
2 answers:
Jlenok [28]1 year ago
8 0
Given:
Confidence level = 90%
mean = 71 beats per minute
standard deviation = 6 beats per minute

margin of error = z * δ / √n

where : δ - population of the standard deviation, n is the sample size ; z is the appropriate z value.

90% confidence level = 1.645 in z-value

margin of error = 1.645 * (6/√80) = 1.645 * (6/8.94) = 1.645 *  0.671 = 1.104

Valentin [98]1 year ago
7 0

Answer:

1.10/ answer B

Step-by-step explanation:

You might be interested in
5x5x5x5x5x6x7x8x9x1x2x3
MrRa [10]
Well by the powers to each of these numbers the only you have to multiply the answer by the next answer. This one took some time but i got 56,700,00 i also calculated the answer to see was it correct. It is. Hope this helps!
5 0
2 years ago
2. Solve 9 = 1 + 8x – 8. A. x = 2 B. x = 10
Gnesinka [82]
9 = -7 + 8x
add 7
16 = 8x
x = 2
6 0
1 year ago
Read 2 more answers
The number of siblings each student at a softball game has is recorded. The graph below shows the probability distribution of ha
Ainat [17]

Answer:

(C)4 siblings

Step-by-step explanation:

Probability is the likelihood of an event occurring or not. Probability value ranges from  impossibility(0) to certainty(1). The lower the value, the less likely the event is bound to occur.

From the probability distribution table, the probability of having 4 siblings at the game is 0. This is the lowest out of all the given value in the probability distribution table. Therefore, it is the least likely event.

5 0
1 year ago
Read 2 more answers
2 m3 of soil containing 35% sand was mixed into 6 m3 of soil containing 15% sand. what is the sand content of the mixture?
jekas [21]
Answer is: 1.6 m3 of sand
4 0
2 years ago
The equation of a line is y = 1.5x − 2. What are its slope and y-intercept?
irakobra [83]
Slope: 1.5
y-intercept: -2

Explanation:
The slope is the number attached to 'x' in the equation. In this case, 1.5 would be the slope because it's attached to x.

The y-intercept is the constant the number not attached to any variables. In this case, -2 is all by itself.

Hope that helps!

:D®
4 0
1 year ago
Read 2 more answers
Other questions:
  • .04 is 1/10 of what number
    6·2 answers
  • Which expression is equivalent to 4√24x∧6y÷ 128x∧4y∧5
    5·1 answer
  • A number in which each digit except 0 appears exactly 3 times is divisible by 3. for​ example, 777,555,222 and​ 414,143,313 are
    6·1 answer
  • A quadrilateral has vertices A(3,5), B(2,0), C(7,0) and D(8,5). Which statement about the quadrilateral is true?
    13·2 answers
  • The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing graduate management education. GMAT
    13·1 answer
  • The students in Marly’s math class recorded the dimensions of their bedrooms in a frequency table.
    9·2 answers
  • you have 5814 meters of rope that you need to cut into 27 meters sections. How many 27 meter section of rope will you be able to
    10·1 answer
  • He repartido mi colección de canicas entre mis tres amigos. A thales le he dado 1/5 del total, a arquimedes un 1/3 del resto y p
    8·1 answer
  • Problem number 26 of the Rhind Papyrus says: Find a quantity such that when it is added to StartFraction 1 Over 4 EndFraction of
    15·2 answers
  • A parking meter contains 4 times as many nickels as quarters. The meter contains $4.05 total. Select two equations that would be
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!