Answer:
The point estimate of the population mean for the confidence interval of (15,32) is 23.5
Step-by-step explanation:
We are given the following information in the question:
Confidence interval for population mean is (15, 32).
We have to find the point estimate for population mean.
Formula:
The point estimate of the population mean for the confidence interval of (15, 32) is 23.5
Maggie = x years old
Demarco = x + 4
Anna = 3*Demarco
Anna = 3*(x + 4)
Anna = 3x + 12
Hope this helps!
Answer:
Step-by-step explanation:
Given that IQ mean is 100 and std dev = 12 for normal adults
Std error = 
i.e. sample size should be atleast 97
The required sample size is 97.
This is reasonable as this is greater than 30
Yes. This number of IQ test scores is a fairly large number.
Answer:
B
Step-by-step explanation:
The measure of the chord- chord angle ABC is half the sum of the arcs intercepted by the angle and its vertical angle, that is
∠ ABC = 0.5( 82 + 44)° = 0.5 × 126° = 63° → B
Answer:
1264 and 632
Step-by-step explanation:
x + 2x = 1896
3x=1896
x=632
