Answer:
35 pounds is the point estimate for the the number of excess pounds that population weighed.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 90
Sample mean, = 35 pounds
Population standard deviation, = 3.5
We have to find the point estimate of the number of excess pounds that population weighed.
The best point estimate is the sample mean.
Thus, we can write,
Thus, 35 pounds is the point estimate for the the number of excess pounds that population weighed.
Answer: (3, 6)
Step-by-step explanation:
1. You have the following function:
2. To find the point that lies on the graph of the function above, you can substitute the value of <em>x</em> given in the option; if you obtain the value of <em>y</em> shown in that option, then that point lies on the graph. Then, you have:
3. The point is (3,6), then it is lie on the graph.
Malcom Davis earnings is an illustration of equations and proportions.
Let the profit be P, and the gross income be G.
So, we have:
<u>(a) The equations</u>
For plan A, we have:
<em /><em> ----1/90 of the company's gross income</em>
For plan B, we have:
<em /><em> ----1/90 of the company's profit</em>
When both are the same, we have:
This gives
Substitute
Hence, the equation is:
<u>(b) Solve the equation in (a), and intepret</u>
Cross multiply
Collect like terms
Divide both sides by 30
The gross income must be $300000, for Dave to earn the same amount with either plan.
<u>(c) His earnings based on (c)</u>
We have:
Substitute
His earning is $3333.33 when the plans are the same
<u>(d) If the gross income in less than (b)</u>
If the gross income is <em>less than $300,000</em>, then plan A would better for Malcom Davis, because his earnings in plan A would be <em>greater than </em>plan B
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