Why is 5 mililon greater than 152000
1 answer:
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Answer:
9/10
Step-by-step explanation:
step 1
Compare the slopes
therefore
An experienced skier would like the 9/10 hill slope because it is steeper, while the 1/10 is a softer slope.
The demand equation is P = -0.05x + 105
STEP - BY - STEP EXPLANATION
What to find?
<em>The demand equation.</em>
The following information is used to solve the problem.
If (x₁ , y₁) and (x₂, y₂) are any dinstinct points on a line a non-vertical line L, then the equation of the line that has a slope(m) and passes through the point (x₁ , y₁) is given by the formula below:
Assume p, be the unit price and x be the demand when the price is $p.
From the question given, when the unit price x = 300 units, the demand p = $90 and when the unit price x = 1300 units, the demand p = $40
This means the demand curve passes through the points (300, 90) and (1300, 40).
Assume the demand equation is linear, then the line of the equation passes through the points (300, 90) and (1300, 40).
Now;
y=p x₁ =300 y₁ = 90 x₂ = 1300 y₂=40
Substitute the values into the function and simplify.
Simplify the above.
Open the parenthesis.
P- 90 = -0.05x + 15
Add 90 to both-side of the equation.
P = -0.05x + 15 + 90
P = -0.05x + 105
Hence, the demand function is P = -0.05x + 105
Answer:
The mean is of -0.4 hours.
Step-by-step explanation:
To solve this question, we need to understand the central limit theorem and subtraction of normal variables.
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Subtraction between normal variables:
When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.
Mean of the sample of 64 Duracell:
By the Central Limit Theorem, 4.1 hours.
Mean of the sample of 64 Eveready:
By the Central Limit Theorem, 4.5 hours.
Mean of the difference?
Subtraction of normal variables, so we subtract the means.
4.1 - 4.5 = -0.4
The mean is of -0.4 hours.