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3 years ago

Eric is painting the foyer of his home. It measures 6.5 feet by 4.2 feet, with a 9-foot ceiling.

Mathematics

1 answer:

QveST [7]3 years ago

6 0

Answer:

Area of all the walls in the foyer together is 192.6 feet.

Step-by-step explanation:

6.5 * 9=58.5

4.2 * 9=37.8

58.5 * 2 = 117

37.8 * 2= 75.6

117 + 75.6 = 192.6

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3 years ago

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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