We will use the following formula to work out the confidence interval
Upper limit = μ + z* (σ/√n)
Lower limit = μ - z* (σ/√n)
We have
μ = 79.3
σ = 7.8
n = 12
z* is the z-score for 95% confidence level = 1.96
Substitute these into the formula, we have
Upper limit = 79.3 + 1.96 (7.8/√12) = 83.7
Lower limit = 79.3 - 1.96 )7.8/√12) = 74.9
Answer:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
to find the x-intercept:
Make y=0
0=-8x+4
8x =4
x=4/8
x=1/2
to find y-intercept:
Make x=0
y=-8(0) +4
y=4
Hope this helps!
Mark brainliest if you think I helped! Would really appreciate!
Answer:
Amount of mercury in population is in between 0.2841 , 1.1531
Step-by-step explanation:
Step by step explanation is given in the attachments
