Answer:
Assuming ages are normally distributed, the 98% confidence interval for the population average age is [26.3, 35.7].
Step-by-step explanation:
We have to construct a 98% confidence interval for the mean.
The information we have is:
- Sample mean: 31
- Variance: 49
- Sample size: 15
- The age is normally distributed.
We know that the degrees of freedom are
Then, the t-value for a 98% CI is t=2.625 (according to the t-table).
The standard deviation can be estimated from the variance as:
The margin of error is:
Then, the CI can be constructed as:
Hello from MrBillDoesMath!
Answer:
exponential growth , y-intercept 3
Discussion:
Any equation of the form b^x (b a constant) models <u>exponential </u>growth.
The y-intercept value is the value of y when x = 0, that is,
y = 3 (0.59)^0 = 3 * 1 = 3
Thank you,
MrB
I’m not sure what the answer is Um but maybe if u look on google and other websites
Answer:
A. A bar magnet’s magnetic field is larger than Earth’s.
Step-by-step explanation:
The average magnetic field strength in the Earth's outer core was measured to be 25 Gauss, 50 times stronger than the magnetic field at the surface.
The final balance is $23,970.67
Step-by-step explanation:
