Answer:
The minimum sample size needed for each city = 922
Step-by-step explanation:
From the information given:
the objective is to find the minimum sample size needed for each city so that the margin of error not to exceed 6%.
If we take a look at the question very well:
we are only given the confidence interval of 99% and the margin of error of 6%
we were not informed or given the value or estimate of any proportions>
so we assume that:
At confidence interval of 0.99 , the level of significance = 1 - 0.99 = 0.01
The critical value for 
= 
= 2.576
The minimum sample size needed can be calculated by using the formula :
n = 921.63
n 
922
∴ The minimum sample size needed for each city = 922
223,000 that's the answrs
B:200 becuase "t" is the variable 10 multiplied by 8 day the days they want to plug into t so 80. 80+120 is 200.
To get the area of the cone we need to find the radius first.
tan 70=r/12
r=12tan 70
area of a circle is given by:
A=πr²
thus the area of the ground covered by the tent will be:
A=π(12tan70)²
The answer is
A] A=π(12tan70°)²
Answer:
185 units
Step-by-step explanation:
Given,
The revenue function is,
Cost function,
,
Where,
x = number of units produced.
Thus, profit = revenue - cost
Differentiating with respect to x,
Again differentiating with respect to x,
For maxima or minima,
P'(x) = 0,
For x = 185,
P''(x) = negative,
Hence, for maximising the profit 185 units must be produced.
