Answer:
19 ) B (<2 and <5)
20) A(20)
21 and 22 Don't know sorry
Answer:
The sample size is used for the survey (n) = 1082
<u>Step-by-step explanation</u>:
<u>Explanation</u>:-
<u>Step(i)</u>:-
Given data There has been a trend toward less driving in the last few years, especially by young people. From 2001 to 2009
Assume the standard deviation was 2000 miles in 2009
Given the Population standard deviation 'σ' = 2000 miles
Given the margin of error at 90% of confidence interval
Margin of error = 100 miles
The z- score value at 90% of confidence interval = 1.645
<u>Step(ii):-</u>
The Margin of error is determined by
![M.E = \frac{Z_{\alpha }S.D }{\sqrt{n} }](https://tex.z-dn.net/?f=M.E%20%3D%20%5Cfrac%7BZ_%7B%5Calpha%20%7DS.D%20%7D%7B%5Csqrt%7Bn%7D%20%7D)
![M.E X \sqrt{n} = Z_{\alpha } S.D](https://tex.z-dn.net/?f=M.E%20X%20%5Csqrt%7Bn%7D%20%20%3D%20Z_%7B%5Calpha%20%7D%20S.D)
Now the sample size ![\sqrt{n} = \frac{Z_{\alpha } S.D}{Marginerror} = \frac{1.645 X 2000}{100}](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%20%3D%20%5Cfrac%7BZ_%7B%5Calpha%20%7D%20S.D%7D%7BMarginerror%7D%20%3D%20%5Cfrac%7B1.645%20X%202000%7D%7B100%7D)
√n = 32.9
squaring on both sides , we get ' n ' = 1082.41
<u>Final answer:-</u>
The sample size is used for the survey (n) = 1082
Currently we do not know the price of the PS5 but I believe it will be $550
Answer:
Correct so far.
The median score must be between positions 32 and 33 on the table.
The median score is 72.
Step-by-step explanation:
Correct so far.
The median score must be between positions 32 and 33 on the table.
The median score is 72.
Answer:
volume = (length × Width × height)
(567/2) = (9×) × (17/4) × (w)
283.5 = 38.25w
w= 7.41inches