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
Andrei [34K]
4 years ago
11

A simple random sample from a population with a normal distribution of 106106 body temperatures has x overbarxequals=98.1098.10d

egrees Upper F°F and sequals=0.610.61degrees Upper F°F. Construct anan 8080​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.
Mathematics
1 answer:
Scrat [10]4 years ago
5 0

Answer: (97.084, 99.116)

Step-by-step explanation:

As per given , we have

sample size :n= 106

degree of freedom: df = 105      (df=n-1)

\overline{x}=98.10\\ s=0.61

Significance interval : \alpha: 1-0.80=0.20

Since , population standard deviation is unknown , so we use t-test .

Using t-value table ,

t_{df,\ \alpha/2}=t_{(105,\ 0.10)}=1.290

Now , 80% Confidence interval will be :

\overline{x}\pm t_{df,\ \alpha/2}\dfrac{s}{\sqrt{n}}

98.10\pm (1.290)\dfrac{0.61}{\sqrt{0.6}}

\approx98.10\pm 1.016

=(98.10- 1.016,\ 98.10+ 1.016)=(97.084,\ 99.116)

Thus , The 80​% confidence interval estimate of the standard deviation of body temperature of all healthy humans = (97.084, 99.116).

You might be interested in
On an island there are 7 cities. Each two of them connected by a direct road. How many roads are there?
Gnoma [55]

Answer:

21 roads

Step-by-step explanation:

If each two cities are connected by a direct road, to find the number of roads we just need to solve a combination of 7 choose 2, that is, we need to find all pairs of two cities among the 7 cities:

Combination of 7 choose 2 = 7! / (5! * 2!) = 7*6/2 = 21

So there is a total of 21 roads on the island.

3 0
3 years ago
Read 2 more answers
Samochód osobowy przebył drogę 120 km w czasie 75 minut. z jaką prędkością się poruszał (km/h) daje naj proszę
lesya692 [45]

Answer:

The speed of the car is 96 km/h

Step-by-step explanation:

Your question, trasnlated into English, is teh following

"The passenger car traveled 120 km in 75 minutes. at what speed he moved (km / h) "

We use the definition of speed

Speed  = Distance / time

Distance = 120 km

time = 75 minutes = 1.25 h

Speed   = 120 km / 1.25 h

Speed    = 96 km/h

The speed of the car is 96 km/h

4 0
3 years ago
188 is 150% of what number?
Aleksandr-060686 [28]
1 Answer


Don't Memorise
Feb 16, 2016
The number
=
125.33
Explanation:
Let the number be denoted as
x
:
As per the question:
188
=
150
%
×
(
x
)
188
=
150
100
×
(
x
)
188
×
(
100
150
)
=
x
125.33
=
x
6 0
3 years ago
Read 2 more answers
Mr Jones places 3 orders for school t-shirts. Each order has 16 boxes of shirts and each box holds 17 shirts. How many T-shirts
MatroZZZ [7]

3x16=180 boxes

17x16=272 shirts (17 shirts per boxes, 16 boxes)


the answer is 272 shirts

6 0
4 years ago
Read 2 more answers
A bundled computer package costs $760.50. There is an 8 percent convenience fee for assembling the package. How much will the co
guajiro [1.7K]
So we need to find 8% of 760.50 then add it to the original cost of the computer package. 
To find 8%, multiply like what is below. 

$760.50 × .08 = 60.84
$60.84 is 8% of $760.50
Add both totals together to get the cost of the computer, with assembly

Answer: $821.34
5 0
3 years ago
Other questions:
  • The school board administered a reading test to all eighth-grade students at High Achievers Charter School and determined that 1
    5·2 answers
  • Plz help me with this question
    8·1 answer
  • A kayaker can paddle 12 mi in 2 h moving with the river current. Paddling at the same pace, the trip back against takes 4 h. Ass
    13·1 answer
  • What is the distance between the points (−7, 1) and (−7, −5) on the coordinate plane, in units?
    6·1 answer
  • 350 is what percentage of 50?
    5·2 answers
  • What the answer ???!!
    7·1 answer
  • The value of 2481 is. Times the value of 2 in 5072
    13·1 answer
  • Susanna added 2 × <br> 1<br> 100<br> to 204.197. What is the sum?
    11·1 answer
  • Solve the system of equations 4x – 5y = –6 and -6x + 7y = 12 by<br> combining the equations.
    8·1 answer
  • The aircraft A330 flies at an average speed of 400 miles per hchor. The expression, 400t gives the distance traveled by the airc
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!