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
TiliK225 [7]
3 years ago
12

100 POINTS!!!!!!!!

Mathematics
2 answers:
liq [111]3 years ago
8 0

Answer:

the last answer is correct

Step-by-step explanation:

There is a 99% chance that the population mean is between 68 and 72 beats per minute.

yawa3891 [41]3 years ago
5 0

Form the confidence level (99%), we calculate the "alpha" value

alpha=1-(99/100)=0.01

Now, calculate the critical probability (p-start)

p*=1-(alpha/2)=1-(0.01/2)=0.995

z-score could be calculated from p*,,,

z-score=2.57583

Now, calculate the Margin of Error:

standard deviation = s

number of adults = n

ME=(z*s)/(sqrt n)=(2.57583*12)/(sqrt 250) = 1.955

The confidence interval = mean +or- ME

                                     = 70+1.955  or  70-1.955

So that we can conclude that the 99% confidence interval for the mean beats per minute is 68.045 and 71.955

I hope you got the idea!

You might be interested in
The population of a particular city is given by the function P(t) = 27,400(1.07)t, where t is the time in years and P(t) is the
otez555 [7]

Answer:

27,400 is the current population

7% is the rate of increase

The new size is:

  • 38,430 is the population if t is an exponent
  • 146,590 is t is NOT an exponent in the formula you typed

Step-by-step explanation:

To find the population in a future year, use the formula:

P(t) = 27,400(1.07)t

Substitute the value t=5 to find the population in 5 years.

P(t) = 27,400(1.07)t\\P(t) = 27,400(1.07)(5)\\P(t) = 146,590


Or if the equation is supposed to have t as an exponent then look below:

P(t) = 27,400(1.07)^t

Substitute the value t=5 to find the population in 5 years.

P(t) = 27,400(1.07)^t\\P(t) = 27,400(1.07)^(5)\\P(t) = 38,430

This formula is based off the standard formula A=A_0(1+r)^t so r, the rate is 1.07=1+0.07 so r is 7%.

A_0 is the starting population which is 27,400 here.

4 0
3 years ago
A minimum temperature of -4.44°C was recorded at a lake. A minimum temprature of 23.3°C was recorded later on the same day. Dete
GuDViN [60]

Answer:

27.74 is the difference

Step-by-step explanation:

23.3° C - (-4.44° C)

23.3 + 4.44

27.74

5 0
3 years ago
What are the x-intercepts and y-intercepts of 2x + 3y = 6?
Sonja [21]
The y intercept is at 2 and the x intercept is at 3
3 0
3 years ago
Yallllll pls help mee plsssssssssssssssssssssssss
elixir [45]
A- Veronica —> v=5+2m
Total —> v+m=32

B- since you already know that to get veronica’s number of stuffed animals, you need to use v=5+2m, you need to substitute it in the total equation. So it’ll be:

(5+2m)+m=32

(5+2m) represents veronica’s stuffed animals
m represents Mariposa’s stuffed animals


C- Mariposa —> 9
Veronica —> 23
3 0
3 years ago
Using 6 as a denominator, what fraction completes the following equation: 1 − 2/12 = ? a.4/6 c. 3/6 b.5/6 d. 2/6
svlad2 [7]

Answer:

5/6

Step-by-step explanation:

1-\frac{2}{12}=1-\frac{1}{6}=\frac{1*6}{1*6}-\frac{1}{6}\\\\=\frac{6}{6}-\frac{1}{6}=\frac{6-1}{6}=\frac{5}{6}

8 0
3 years ago
Other questions:
  • The two triangles below are similar.
    15·2 answers
  • Ok. I have a drawing of 2 full colored 100 squares. What is it in decimal and fraction? Please help me!!
    7·1 answer
  • 2. Peter, Jeff, and John, each perform subtraction incorrectly as follows:
    13·1 answer
  • Simplify the expression<br> 9(10 + 5) / (6 - 5)<br><br> A.95<br> B.135<br> C.85<br> D.17
    5·2 answers
  • A standard 52 card deck has four 13 card suits: diamonds, hearts, clubs, and spades. The diamonds and hearts are red, and the cl
    12·1 answer
  • Use synthetic division and the Remainder Theorem to find P(a). P(x) = 2x3 + 4x2 − 10x − 9; a = 3
    15·1 answer
  • Find the value of the variable.
    11·1 answer
  • A - 6 &gt; - 19 solve for A
    9·2 answers
  • A circular cake is 360 degrees if you eat a piece that is 40 degrees of the cake, how many degrees are left in the cake?
    6·1 answer
  • Daniela examines the two triangles below and determines Triangle D A C is similar to triangle T R S.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!