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
Nitella [24]
3 years ago
6

A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a

new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 15 minutes. How large a sample should she take to estimate the mean time to within 3 minutes with 90% confidence?
Mathematics
1 answer:
KatRina [158]3 years ago
7 0

In the analysis of the given options, the most likely answer to this question is that the sample size of the study should be at least 30. This is because to get the approximate effect of the study, a sample of 30 will be reliable. 

Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
You might be interested in
Find the angle measures given the figure is a rhombus
IrinaK [193]

Answer:

74°

Step-by-step explanation:

A rhombus is a quadrilateral that has its opposite sides to be parallel to be each other. This means that the two interior opposite angles are equal to each other. Since the sum of the angles of a quadrilateral is 360°.

According to the triangle, since one of the acute angle is 32°, then the acute angle opposite to this angle will also be 32°.

The remaining angle of the rhombus will be calculated as thus;

= 360° - (32°+32°)

= 360° - 64°

= 296°

This means the other two opposite angles will have a sum total of 296°. Individual obtuse angle will be 296°/2 i.e 148°

This means that each obtuse angles of the rhombus will be 148°.

To get the unknown angle m°, we can see that the diagonal cuts the two obtuse angles equally, hence one of the obtuse angles will also be divided equally to get the unknown angle m°.

m° = 148°/2

m° = 74°

Hence the angle measure if m(1) is 74°

4 0
3 years ago
In basketball, Katrina makes 6 out of every 9 free throws. Her coach claims that if she tries 15 free throws she should make 10
zloy xaker [14]
Yes, Thats 2/3 rds of the equation
5 0
2 years ago
Read 2 more answers
Which angle is congruent to ^^^
Montano1993 [528]

Answer:

Step-by-step explanation:

∠4=∠1

6 0
2 years ago
From the graph of the function, determine the domain and the range.
harina [27]

Answer:

Domain(-4,4) and Range:(-3,0)

Step-by-step explanation:

Because the graph goes through - 4 and 4

3 0
2 years ago
The function, y(r)=2.76r , is used to convert Russian rubles in Japanese yen, and the function, P(y)=0.16y , is used to convert
timurjin [86]

They probably want 880 pesos, since they asked you do intermediate rounding

but a more accurate answer would be
883.20 pesos

To combine the functions, you'd substitute in 2.76r for y in 0.16y. This would give you 0.16(2.76r), which simplifies to 0.4416r, but they want you round this to the nearest hundredth, so its really 0.44r.  Substitute in the 2000 for r and you get 0.44 * 2000 which is 880 pesos

5 0
3 years ago
Other questions:
  • jennifer scored a 69%, 82%, 74%, 91% and a 79% on her math tests this quarter. What is jennifer's average test score for this qu
    15·2 answers
  • If $20,900 is invested at an interest rate of 8 percent per year, find the value of the investment at the end of 5 years for the
    15·1 answer
  • Which graph represents the solution set for the quadratic inequality x2 + 2x + 1 > 0?
    9·2 answers
  • What is easy-access credit?
    9·2 answers
  • On a piece of paper graph f(x) = 3 • (2)^x then determine which answer choice matches the graph you drew
    13·1 answer
  • Find all the missing angles: a, b, c, d.
    13·1 answer
  • Use compatible numbers to estimate the quotient.674.8 ÷ 23
    15·1 answer
  • Find the sine pls help
    7·1 answer
  • Help me please !!!!!!!!!!!!!!!!!!!!
    9·1 answer
  • Read the picture that's were the question is.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!