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3 years ago

5

Someone plz help me giving brainliest T^T plz select (2)

1 answer:

Gekata [30.6K]3 years ago

8 0

Answer:

F.

Step-by-step explanation:

there are 36 tiles overall from where 4 are purple so

$\frac{4}{36} =\frac{1}{9} =\frac{1}{3} *\frac{1}{3}$

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the length of the kitchen floor on the scale drawing is 1 1/2 what is the actual length of the kitchen floor? when 1/4 inch = 4

Lilit [14]

This means that for every inch there is 16 feet. 1 and 1/2 inches is also 1 + 1/4 + 1/4 inches, or (to scale) 16 + 4 + 4 feet, equaling 24 feet.

TL;DR 24 feet

4 0

3 years ago

In a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a

djverab [1.8K]

Answer:

90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

Step-by-step explanation:

We are given that a a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a standard deviation of 0.39 pounds.

Firstly, the pivotal quantity for 90% confidence interval for the mean waste recycled per person per day for the population of Washington is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean waste recycled per person per day = 2.3 pounds

s = sample standard deviation = 0.39 pounds

n = sample of residents = 10

$\mu$ = population mean waste recycled per person per day

<em>Here for constructing 90% confidence interval we have used t statistics because we don't know about population standard deviation.</em>

So, 90% confidence interval for the population mean, $\mu$ is ;

P(-1.833 < $t_9$ < 1.833) = 0.90 {<u>As the critical value of t at 9 degree of</u>

<u>freedom are -1.833 & 1.833 with P = 5%</u>}

P(-1.833 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 1.833) = 0.90

P( $-1.833 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X - \mu}$ < $1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

P( $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

<u>90% confidence interval for</u> $\mu$ = [ $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ , $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ ]

= [2.074 , 2.526]

Therefore, 90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

8 0

3 years ago

Help please bdjdnhsj

Yuliya22 [10]

Answer:

True

Step-by-step explanation:

7 0

3 years ago

Resolve 2x^2+5x-1÷x(x-1)(x+2) into partial fractions.<br>

Wewaii [24]

2x^3 + 4x^2 - x + 2
——————————
x

3 0

3 years ago

The distance of Rome is 15558 write the distance to Rome in scientific notation

zzz [600]

Answer:

1.5558 * 10^4

Step-by-step explanation:

Make sure you write in your units

6 0

3 years ago