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
polet [3.4K]
2 years ago
11

An experienced census official feels that she can accurately estimate the number of inhabitants of a city block by simply noting

the size of the block and the types of buildings (single family homes, apartments, businesses, etc.) that are found on the block. This procedure, if accurate, would be much quicker and cheaper than visiting each residence and taking a survey of its inhabitants. The data below are estimates of block populations provided by the official for 10 blocks in a large city, and the actual numbers of inhabitants for the same 10 blocks. Inhabitants of City Blocks Estimate 193 86 81 87 223 226 151 126 120 76 Actual 163 140 150 179 204 128 73 89 136 145 Step 1 of 2: Find the value of the test statistic for testing whether there is a linear relationship between the actual number of inhabitants and the estimated number. Round your answer to two decimal places, if necessary.
Mathematics
1 answer:
Art [367]2 years ago
7 0

Answer:

035

Step-by-step explanation:

193

86

81

87

223

226

151

126

120

76

Y:

163

140

150

179

204

128

73

89

136

145

Using a correlation Coefficient calculator, the correlation Coefficient, r for the data = 0.127

The test statistic :

T = r² / √(1 - r²) / (n - 2)

Sample size, n = 10

Hence,

T = 0.127² / √(1 - 0.127²) / (10 - 2)

T = (0.016129 / 0.3506905)

T = 0.3506905

The value of the test statistic to 2 decimal places is 0.35

You might be interested in
3/4 divided by 4/5
Alex787 [66]
1. 15/16
2. 11/18
3. 3/4
4. 6/7

Please make me brainliest
3 0
3 years ago
Read 2 more answers
Solve for all solutions of the equation: x^3 - 8 = 0
djyliett [7]

Answer:

x=2

Step-by-step explanation:

x^3=8

x=2  (take the cubed root of both sides)

This can be solved by adding 8 to both sides, then taking the cubed root of both sides

8 0
3 years ago
What is a 3, 4, 5 triangle?
Alexandra [31]

Answer:

<em>A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist. For example, a right triangle may have angles that form simple relationships, such as 45°–45°–90°. This is called an "angle-based" right triangle.</em>

Step-by-step explanation:

Hope this helps

Have a nice day :)

5 0
2 years ago
Read 2 more answers
PLEASE HELP! GIVING OUT BRAINLIEST
cestrela7 [59]

a)  Unit rate  =  24 oz / 10lb   = 2.4 oz /  lb

This means that we  need 2.4 oz of seasoning for every pound of crawfish

 

b) For  30 lbs....we need    30 * 2.4 =  72 oz of seasoning

 

c)  With 36 oz of seasoning...we can cook      36 / 2.4  =  15 lbs of crawfish

7 0
3 years ago
........................................
Elena L [17]

Answer:

The answer I got for this equation is x=5

I hope this image helps of showing you how to solve the equation.

5 0
2 years ago
Other questions:
  • Which fraction is larger 6/17 or 18/51
    15·2 answers
  • Solve for substitution<br> x-2y+z=-11<br> 3x+2y-z=7<br> -x+2y+4z=-9
    13·1 answer
  • How do we write 2.51 in expanded form and in word form
    6·1 answer
  • If f(x) = |-3x - 6| - 10, find f(5)
    11·2 answers
  • In which number is the value of the 5 ten time the value of the 5 in 10.059
    6·1 answer
  • PLEASEEEEE HELPP!! If possible how are the triangles congruent ???
    14·2 answers
  • Plzzzzz can any one help me I don’t understand :(
    7·1 answer
  • HELP HURRYYY!!! I DONT KNOW
    11·1 answer
  • A restaurant sells beverages in 16-pint pitchers. If a customer orders a pitcher of lemonade, how many gallons of lemonade does
    15·1 answer
  • A chemist reacted 17.25 grams of sodium metal with an excess amount of chlorine gas. The chemical reaction that occurred is show
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!