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
LiRa [457]
3 years ago
12

41 packages are randomly selected from packages received by a parcel service. the sample has a mean weight of 20.6 pounds and a

standard deviation of 3.2 pounds. what is the best pint estimate for a confidence interval estimating the true mean weight, μ, of all packages received by the parcel service? answer: _____pounds
Mathematics
1 answer:
lina2011 [118]3 years ago
6 0
Using normal distribution \alpha = 1-0.95=0.05
critical probability p^{*} = 1 -  \frac{ \alpha }{2}
critical value for the critical probability is CV = 1.96
standard error SE =  \frac{3.2}{ \sqrt{41} } = 0.5
margin of error = CV*SE = 1.96 * 0.5 = 0.98
95% confidence interval is between μ + 0.98 and <span>μ - 0.98, which is (19.62, 21.58)</span>
You might be interested in
I need help is due in 20 minute
AfilCa [17]
A is 5 , b is 1 , c is 4 , d is 3, and E is 2
7 0
3 years ago
The mr William two questions please!
melamori03 [73]

well, in short, the students and chaperones are at a 2 : 9 ratio, and we know there are 171 students, how many chaperones then, so long they maintain a 2:9 ratio?

\bf \cfrac{chaperones}{students}\qquad 2:9\qquad \cfrac{2}{9}\qquad \qquad \cfrac{x}{171}=\cfrac{2}{9}\implies 9x=2(171) \\\\\\ 9x=342\implies x=\cfrac{342}{9}\implies x=38

5 0
3 years ago
Simplify i to the 37th power<br> A-1<br> B- -1<br> C- -i<br> D- i
nika2105 [10]

Answer:

i think D is your answer but i could be wrong

8 0
3 years ago
Write the expression that represents the volume of the prism in cubic units
xz_007 [3.2K]
Volume = w * 2w * 3w = 6w^3  cubic units
6 0
3 years ago
a bag contains 5 grape tootsie pops and 8 chocolate tootsie pops. if juan pulls a chocolate tootsie pop out of the bag and eats
kipiarov [429]

Answer:

= 5 / 12

Step-by-step explanation:

Probability is an outcome of chance. It is a measure of outcomes of events.

To solve the probability of picking a Tootsie Pop, we must comfortably know the contents of the bag.

Number of GRAPE Tootsie pops = 5

Number of CHOCOLATE Tootsie pops= 8

Total number of Tootsie pops = The sum of both Tootsie pops

Total number = 5 + 8

= 13.

Let's note that tge question said , Juan pulls a chocolate Tootsie Pop and eats. The implication is it has reduced the total number of Tootsie Pops left in the bag.

Therefore:

The probability that the next pop he pulls out will be grape will be

Probability (Grape) = 5 / (13 -1)

= 5 / 12

The probability that the next Pop he pulls out will be a grape = 5/12

4 0
3 years ago
Other questions:
  • The number above the fraction the bar
    7·1 answer
  • Find the missing number<br> 45-9=46-
    15·2 answers
  • Evaluate the​ expression, ​(g◦​f)(3​), given the following functions.<br> ​f(x)=x+2 and ​g(x)=x
    8·1 answer
  • These types of angles have a sum of 180 degrees​
    5·1 answer
  • What is the slope of the line?
    14·1 answer
  • The expression cos 42° in terms of sine
    14·1 answer
  • The probability of an event is 4:5. What is this probability expressed as a decimal?
    14·1 answer
  • -28 + 2x = -18<br> x=? Solve for x
    10·2 answers
  • How many days are in 52 weeks?
    10·2 answers
  • Given that lines m and n are parallel and m&lt;60, find the measures of the remaining angles m&lt;3=?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!