3m-27=2m-12 solve for m
2 answers:
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Answer:
Step-by-step explanation:
Amount of water in tank 1 = amount of water in tank 2
30t +25 = -20t + 1000
Add 20t to both sides
30t + 20t + 25 = -20t + 20t + 1000
50t + 25 = 1000
Subtract 25 from both sides
50t + 25 - 25 = 1000 - 25
50t = 975
Divide both sides by 50
t = 975/50 = 39/2
t = 19 minutes 30 seconds
After 19 1/2 minutes both tanks will have 610 liters of water
Answer:
a) The claim is not plausible
b) claim is plausible and the type of bias here is response bias
Step-by-step explanation:
Given data:
Number of political parties = 4
coffee party got the support of 435 out of 1183 randomly selected voters in a poll conducted.
<u>A)</u><u> Construct and interpret a 98% confidence interval to estimate the proportion of voters who support the coffee party </u>
H0 ( null hypothesis ) : p = 0.42
Ha ( alternate hypothesis ) : p ≠ 0.42
z value for 98% confidence interval = 2.326
using 98% confidence interval the value of p = ( 0.3668, 0.3686 )
hence the claim is not plausible
<u>B) Determine the type of bias </u>
Assume the actual number of people = 1200
and 17 people did not respond
hence number of people who responded = 1200 - 17 = 1183
Therefore the claim by the manager is plausible because 17 people did not respond and the type of bias here is response bias
<em>attached below is a detailed solution of the problem of the A part </em>
