Answer:
The average age would be 45.
Step-by-step explanation:
Answer:
B. The t-distribution has less spread as the degrees of freedom increase because, as n increases, s becomes closer to sigma by the law of large numbers.
Step-by-step explanation:
The sample standard deviation, s gets considerably closer to the population standard deviation, σ, this trend follows the proposition of the law of large numbers whereby the mean or average value changes as the sample size, n increases. According to the law of large numbers, as the sample size increases, the sample mean gets continously closer to the population mean, sample standard deviation follows this same trend and thus variability or spread decreases as sample size increases.
In a parallelogram, opposite sides are congruent.
2u = u + 19
Subtract u from both sides.
u = 19
Answer: u = 19
Answer:
To factor this we can say that it has to be in the form (3x+a)(x+z), because there is no other way to get 3x^2. Not that a and z are random numbers. We can guess values for a and z and see that a can be 2 and z can be 3. The answer is (3x+2)(x+3) because of this.