Denote the numbers x, y. so we have equations y-x=3; x^2=4y, therefore x^2-4x-12=0. so x=6, y=9 or x=-2; y=1
Answer:
D. A discrete data set because there are a finite number of possible values.
Step-by-step explanation:
Assuming in a test of a method of gender selection, 725 couples used the XSORT method and 368 of them had baby girls. The value given is from a discrete data set because there are a finite number of possible values.
In Mathematics, a discrete data is a data set in which the number of possible values are either finite or countable.
On the other hand, a continuous data is a data set having infinitely many possible values and those values cannot be counted, meaning they are uncountable.
<em>Hence, if 725 couples used the XSORT method and 368 of them had baby girls; this is a discrete data because the values (725 and 368) are finite and can be counted. </em>
Iggy is an L...............
Answer:
Step-by-step explanation:
Hello!
Interest hypothesizes is that the variance of the golfer's scores equals to δ²= 10.0.
A random sample of 28 rounds of golf had a sample standard deviation S= 3.5
The statistics hypotheses are:
H₀: δ²= 10.0
H₁: δ²≠ 10.0
α: 0.05
To conduct a hypothesis test for the population variance you have to work using the Chi-Square distribution, this test is two-tailed so you will have two critical values. Between these two values is defined as the "not rejection region" and below and above them lies the "rejection region"
Lower critical value: 
Upper critical value: 
If 
≤ 16.928 or ≥ 40.113, the decision is to reject the null hypothesis.
If 16.928 < < 40.113, the decision is to not reject the null hypothesis.
The calculated is between the two critical values, so the decision is to not reject the null hypothesis. We can conclude that the population variance fro this golfers play score is 10.
I hope this helps!
