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3 years ago

5

Which statements are true? Check all that apply. All rectangles are squares. All rhombi are parallelograms. All squares are rhom

bi. All trapezoids are parallelograms. No trapezoid is a rectangle.

1 answer:

Ede4ka [16]3 years ago

6 0

Answer:

All rhombi are parallelograms.

All squares are rhombi.

No trapezoid is a rectangle.

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A sample of 60 items from population 1 has a sample variance of 8 while a sample of 40 items from population 2 has a sample vari

lora16 [44]

Answer:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

The statistic would be given by:

$F=\frac{s^2_2}{s^2_1}=\frac{10}{8}=1.25$

Step-by-step explanation:

Information given

$n_1 = 60$ represent the sample size 1

$n_2 =40$ represent the sample size 2

$s^2_1 = 8$ represent the sample variance 1

$s^2_2 = 10$ represent the sample variance 2

The statistic to check the hypothesis is given by:

$F=\frac{s^2_2}{s^2_1}$

Hypothesis to test

We want to test if the two variances are equal, so the system of hypothesis are:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

The statistic would be given by:

$F=\frac{s^2_2}{s^2_1}=\frac{10}{8}=1.25$

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3 years ago

Help plz !!!!!!!!!!!!!!!!

Vera_Pavlovna [14]

Finding the area is easy. You have to multiply the width times the height to get you're product/ answer. For the following problems.

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On a coordinate plane, DEF has vertices D(1,2), E(7,2)and F(1,9). What is the distance between point E and F?

notka56 [123]

Step-by-step explanation:

Using distance formula,

Let the distance between point E and F = ef,

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What are the answers to these two questions??

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b = 35

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