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
Mekhanik [1.2K]
2 years ago
13

How to do this??????????

Mathematics
1 answer:
Nutka1998 [239]2 years ago
6 0
The answer should be 5 idk for sure though
You might be interested in
You have measured the systolic blood pressure of a random sample of 25 employees of a company located near you. A 95% confidence
Alla [95]

Answer:

122 \leq \mu \leq 138

The 95% confidence interval would be given by (122;138)

And the correct interpretation for this case is:

c. If the procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % where by a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

The confidence interval for the mean is given by the following formula:  

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}} (1)  

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:  

df=n-1=25-1=24  

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,24)".And we see that t_{\alpha/2}=2.06  

Now we have everything in order to replace into formula (1), for this case we got:

122 \leq \mu \leq 138

The 95% confidence interval would be given by (122;138)

And the correct interpretation for this case is:

c. If the procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.

6 0
2 years ago
Jimmy Bullard and his friend went for fishing.
Anton [14]
They caught 19 fishes
6 0
3 years ago
PLEASE HELP!!!! 50 POINTS!!!
skelet666 [1.2K]

Answer:i think its b im not sure tho

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
If you had to add two fractions with denominators of 4 and 5. What might the denominator of the sum be? Show more than one possi
Fiesta28 [93]

Answer:

9

Step-by-step explanation:

4 0
3 years ago
N a recent flu epidemic, the number of flu cases increased by 40% each week. There were 3,000 flu cases during the first week of
Anarel [89]

Answer:

2,880 people

Step-by-step explanation:

Week 1: 3,000 cases

Week 2: 0.4 * 3,000 = 1,200. 1,200 + 3,000 = 4,200

Week 3: 0.4 * 4,200 = 1,680. 1,680 + 4,200 = 5,880

5,880 - 3,000 = 2,880

8 0
3 years ago
Read 2 more answers
Other questions:
  • A blank is a rectangular ​
    11·1 answer
  • What is the slope of the line in the graph?
    10·2 answers
  • How to solve y=x+13 for a graph
    15·2 answers
  • What is the speed of a wave if the wavelength is 100 m and the period is 20 seconds?
    9·2 answers
  • Tina is growing sunflowers in her garden. The flowers are currently 6 inches tall each week x, they will double in size . Which
    10·1 answer
  • 14/100 in simplest term
    13·2 answers
  • Item 16<br> Solve the equation.<br><br> −4/9f=−3
    11·2 answers
  • How do you write 60% as in simplest form?
    10·1 answer
  • Please help. I’ll mark you as brainliest if correct!
    14·1 answer
  • If x = -1, then which of the following equations makes a true statement?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!