Answer:
1. A matched-pairs t-test is valid, despite the sample being a small representation of the population, because the sample is a simple random sample and has a distribution with a single peak.
Step-by-step explanation:
The matched-pairs test is valid, for the reasons given in choice 1. Here's why:
- We do have matched pairs, not a 2-sample t-test, because each two are paired by the house they live in. Husband and wife live together: it's safe to pair them. (This rules out option 5.)
- Check conditions: The sample is large enough (fulfilling the <u>sample size condition)</u>. The sample data is fairly normal, although we don't know the population data, and the sample size is over 40, so we consider it a fairly large sample (fulfilling the <u>nearly normal condition)</u>. We don't know about outliers, but we'll have to assume Ted doesn't have any, because they aren't mentioned.
Y = x² - 16
y = (0)² - 16
y = 0 - 16
y = -16
The y - intercept of the equation is -16.
Factoring this out will be: (a-5) (a+4)
Answer – A, B and C
Out of the four options given, the statements which are true about quadrilaterals are as follows:
A. All squares are rhombuses. (But not all rhombuses are squares)
B. All squares are rectangles (But not every rectangle is a square)
C. All rectangles are parallelograms.
Option D is wrong because trapezoids have only a pair of parallel sides while parallelograms have two pairs of parallel sides
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Answer:
The Answer is C.
Step-by-step explanation:
There is only one number before the decimal point, 6. 6 ones, so we already cross out A and D as incorrect. Now we have B and C. There is only two numbers after the decimal point. The first number after the point is in the tenths place. So, B is the correct answer.
Make me brainlyest if correct, you're welcome!