Answer and explanation:
Null hypothesis: p is not 54%
Alternative hypothesis : p is equal 54%
First find standard deviation
Standard deviation is:
σ = √[ P ( 1 - P ) / n ] = √[ 0.54×0.46/220 ] =0.033
The z score is calculated p-P/σ = (0.54-0.50)/0.033 = 1.2121
Therefore we can conclude that proportions are not same and fail to reject the null hypothesis
For #1 the perimeter if the rectangle would be like 4 vertical and 2 horizontal and the area is 4 x 2= 8
<span>for #2 the first a is 24 the second one for a is 27 the first one for b is 24 and the second one is 35</span>
Divide the silver present in the bar by the total weight of the bar to find the percentage of silver in the bar.
Multiply this decimal by 100 for the percentage.
Rounded to the nearest tenth
, 71.4% of the weight of the bar is silver.
1/4 since 2/3 times 1/2 is 1/3 and if u multiply that by 3/4, the result is 3/12 which can be simplified to 1/4
