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SSSSS [86.1K]
2 years ago
12

The figure below is a net for a rectangular prism. Side a = 64 centimeters, side b = 20 centimeters, and side c = 17 centimeters

. What is the surface area of this figure
Mathematics
1 answer:
Andreas93 [3]2 years ago
6 0

Answer:

My name is math JR LOL

Step-by-step explanation:

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You select a random sample of n=14 families in your neighborhood and find the following family sizes (number of people in the fa
satela [25.4K]

Answer:

a. Best estimate for the mean family size for the population of all families in a country is 16.3571428571

b. 95% confidence interval for the estimate is 16.3571428571±0.7106240840. That is between 15.6465187731 and 17.0677669411

c. The sample is unlikely to be very representative of all families in a country.

Step-by-step explanation:

a. mean family size for the population of all families in a country can be estimated as sample mean, and calculated as:

\frac{15+ 16+ 19+ 18+ 17+ 15+ 16+ 16+  15+ 16+  15+ 16+ 17+ 18 }{14} ≈ 16.3571428571

b. 95% confidence interval for the estimate can be calculated using the equation CI=M± \frac{t*s}{\sqrt{N} } where

  • M is the mean estimate (16.3571428571)
  • t is the corresponding statistic in the 95% confidence level and with 14 degrees of freedom (2.160)
  • s is the standard deviation of the sample (1.2309777100)
  • N is the sample size (14)

s can be calculated as square root of mean squared differences from the sample mean.

Thus 95% CI=16.3571428571± \frac{2.160*1.2309777100}{\sqrt{14} } ≈ 16.3571428571±0.7106240840

The sample is unlikely to be very representative of all families in a country because as the sample data increases, estimate will improve.

7 0
3 years ago
Read 2 more answers
A town has a population of 17000and grows at 4% every year. What will the population be after 5 years, to the nearest whole numb
Elina [12.6K]

Answer:

the answer is 20,400

Step-by-step explanation:

If multiply 17000 by 4% or 0.04 you get 680, this is how mucb it grows by each year, multiply 680 by 5 you get 3400, add that to 17000 and that is how much it grows by each year

6 0
2 years ago
What shape is this ??? Please help me.
lord [1]

Answer

sorry its a parallelogram

Step-by-step explanation:

5 0
3 years ago
Identify a pattern and find the next three numbers. 66​, 88​, 1111​, 1515​, ...
azamat
The pattern i see is:
double 6's
+2 = 8,
double 8's
+3 = 11,
double 11's
+4 = 15,
double 15's
+5 = 20,
double 20's
+6 = 26,
double 26's
+7 = 33
double 33's

66, 88, 1111, 1515, 2020, 2626, 3333, ....
3 0
4 years ago
Solve for x!! help this is due soon
Umnica [9.8K]

Answer

91

Step-by-step explanation:

62+27+x=180

6 0
3 years ago
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