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
zepelin [54]
3 years ago
15

A researcher is gathering data to design a wearable device that measures heart rate from the wrist. He/She took wrist measuremen

ts from 10 people to determine what the average wrist size should be for said wearable device. The mean and standard deviation of 10 wrist measurements were calculated to be: Mean, (inches) i = 7.838 Standard | Deviation, Sx Sx = 0.844 Number of samples (n) 10 Determine a 99% confidence interval for the mean presented above. (Use the appropriate table)

Mathematics
1 answer:
shusha [124]3 years ago
3 0

Answer: 99% Confidence interval = 6.97, 8.706

Step-by-step explanation: Please find the attached document for the step by step explanation

You might be interested in
6 = 2 (y + 2)<br><br> find X <br> please
Elena-2011 [213]

Answer: y = 1

there no x, i think you meant y?

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

6=2(y+2)

6=(2)(y)+(2)(2)(Distribute)

6=2y+4

Step 2: Flip the equation.

2y+4=6

Step 3: Subtract 4 from both sides.

2y+4−4=6−4

2y=2

Step 4: Divide both sides by 2.

2y over 2 = 2 over 2

6 0
3 years ago
The graph of y = cosine (x + pi/2) is the graph of the y = cos(x) shifted in which direction?
kap26 [50]

Answer:

pi/2 units to the left

Step-by-step explanation:

Kono Dio Da!!!!

5 0
3 years ago
Read 2 more answers
Find the zeros of y = x + 6x- 4 by completing the square.
dsp73

Answer:

\large\boxed{x=-3\pm\sqrt{13}}

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\qquad(*)\\\\\\x^2+6x-4=0\qquad\text{add 4 to both sides}\\\\x^2+2(x)(3)=4\qquad\text{add}\ 3^2=9\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=4+9\\\\(x+3)^2=13\Rightarrow x+3=\pm\sqrt{13}\qquad\text{subtract 3 from both sides}\\\\x=-3\pm\sqrt{13}

8 0
3 years ago
How many terms are in the expression<br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%2B%20xy%20-%20%7By%7D%5E%7B2%7
amid [387]

a term will be the expression between the + or - signs

\bf \stackrel{\stackrel{one}{\downarrow }}{x^2}+\stackrel{\stackrel{two}{\downarrow }}{xy}-\stackrel{\stackrel{three}{\downarrow }}{y^2}+\stackrel{\stackrel{four}{\downarrow }}{5}

4 0
3 years ago
Please help me put these in the correct order. *No wrong answers* List the following in order Can you list the answers in order
tankabanditka [31]

Answer:

Add or subtract. Show all work.

1) 9.069

2) 43.95

3) 20.64

4) 32.145

5) 7.16

6) 12.2

7) 25.95

8) 15.815

Increasing order (smallest to largest): 5, 1, 6, 8, 3, 7, 4, 2

Decreasing order (largest to smallest): 2, 4, 7, 3, 8, 6, 1, 5

Multiply or divide. Show all work.

1) 44.95

2) 225.9

3) 20.271

4) 11.557

5) 6.78

6) 41.3

7) 120

8) 515

Increasing order (smallest to largest): 5, 4, 3, 6, 1, 7, 2, 8

Decreasing order (largest to smallest): 8, 2, 7, 1, 6, 3, 4, 5

Please mark me Brainliest :)

3 0
3 years ago
Other questions:
  • A ladder leaning against a wall makes a 35° angle with the ground. The foot of the ladder is 5 meters from the wall. What is the
    10·2 answers
  • in the expression 9x - 3 the 9 is a .... A} coefficient B} constant C} term                                         I need it fo
    13·1 answer
  • Find the length of AB , given that DB is a median of the triangle and AC = 50.
    11·2 answers
  • A man cycling along the road noticed that every 12 minutes a bus overtakes him and every 4 minutes he meets an oncoming bus. If
    11·1 answer
  • Soft-drink cans are filled by an automated filling machine. The mean fill volume is 12.1 fluid ounces, and the standard deviatio
    14·1 answer
  • Kelso is in charge of a bake sale. On each table, t, there will be a platter of 24 cookies and 2 bowls of brownies with b browni
    11·1 answer
  • EASY 50 POINTS <br><br><br>Which statement is not a step used when constructing an inscribed square?
    5·2 answers
  • Help please!!!!!!!!!!
    14·1 answer
  • If there are 1 080 pigs and sheep on the farm and the ratio of pigs to sheep are 7:5, how many
    14·2 answers
  • How can you rewrite simple rational expressions in different forms using long division?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!