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
mash [69]
2 years ago
12

For a data set of the pulse rates for a sample of adult? females, the lowest pulse rate is 39 beats per? minute, the mean of the

listed pulse rates is x overbarxequals=74.0 beats per? minute, and their standard deviation is sequals=11.4 beats per minute.
a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the? females?
b. How many standard deviations is that? [the difference found in part? (a)?
c. Convert the pulse rate of 39 beats per minutes to a z score.
Mathematics
1 answer:
Zarrin [17]2 years ago
5 0

Answer:

a) The difference is of 35 beats per minute.

b) So 3.07 standard deviations below the mean.

c) Z = -3.07.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Mean \mu = 74, standard deviation \sigma = 11.4

a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the? females?

39 - 74 = -35

The difference is of 35 beats per minute.

b. How many standard deviations is that? [the difference found in part? (a)?

|Z| when X = 39. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{39 - 74}{11.4}

Z = -3.07

|Z| = 3.07

So 3.07 standard deviations below the mean.

c. Convert the pulse rate of 39 beats per minutes to a z score.

From item b. above, Z = -3.07.

You might be interested in
(2x^3-7x^2-16x-6)÷(2x+1)
Akimi4 [234]

1.236293992929299292929

8 0
2 years ago
PLEASE HELP I’LL MARK BRAINLIEST
Anna35 [415]

the answer is c :) :)

7 0
2 years ago
In 3-4 sentences, describe how you would find a line parallel to the line 2x + 5y = 15 that goes through the point (-10, 1). Be
larisa86 [58]

the parallel line is 2x+5y+15=0.

Step-by-step explanation:

ok I hope it will work

soo,

Solution

given,

given parallel line 2x+5y=15

which goes through the point (-10,1)

now,

let 2x+5y=15 be equation no.1

then the line which is parallel to the equation 1st

2 x+5y+k = 0 let it be equation no.2

now the equation no.2 passes through the point (-10,1)

or, 2x+5y+k =0

or, 2*-10+5*1+k= 0

or, -20+5+k= 0

or, -15+k= 0

or, k= 15

putting the value of k in equation no.2 we get,

or, 2x+5y+k=0

or, 2x+5y+15=0

which is a required line.

6 0
1 year ago
Solve for x: 3(x + 1) = −2(x − 1) + 6.
kow [346]

Answer:

x=1

Step-by-step explanation:

3(x+1)=-2(x-1)+6

3x+3=-2x+2+6

3x+2x=2+6-3

5x=8-3

5x=5

x=\frac{5}{5}

x=1

7 0
2 years ago
There are 14 dogs in a particular class at a dog show. Blue, red, yellow, and white ribbons will be awarded to the first through
stira [4]
There are 14 possibilities for first place.
There are 13 possibilities for second place, since a dog can't get both first and second place.
There are 12 possibilities for third place, since a dog can't get both first, second, and third place.
There are 11 possibilities for fourth place, since a dog can't get both first, second, third, and fourth place.

Multiply them together and get 24024 possibilities.

Hope this helps!

4 0
3 years ago
Other questions:
  • A college basketball player makes 5/6 of his free throws. Assuming free throws are independent, the probability that he makes it
    15·1 answer
  • to rent a certain meeting room, a college charges a reservation fee of $47 and an additional fee of $9.60 per hour the chemistry
    6·1 answer
  • What is 35% of 265 if yall can plz help me right now
    10·2 answers
  • How do you solve question 16?
    13·1 answer
  • Solve these recurrence relations together with the initial conditions given. a) an= an−1+6an−2 for n ≥ 2, a0= 3, a1= 6 b) an= 7a
    14·1 answer
  • Is (-1,1) a solution to y=3x+4 and 4y-3x=-7
    12·1 answer
  • The slope represents the ________ of a line.
    10·1 answer
  • 58 points I need helpppp!
    13·2 answers
  • PLEASE ANSWERRR!!!!!!
    5·1 answer
  • Use the monthly payment formula to find the monthly payment for a $1,000, one year
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!