Margin of error: 0.04; confidence level: 95%; from a prior study, bold p with bold overparenthesis on top is estimated by the decimal equivalent of 89%. find the sample size.

235

Step-by-step explanation:

The formula to calculate the sample size  :-

Given :  Estimated proportion

Margin of error :

Significance level :

Critical value :

Now, the required sample size will be :-

Hence, the required minimum sample size = 235

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm

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step-by-step explanation:

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