3 years ago

HELP PLEASE HELPPPPP

1 answer:

3 0

First find the area of the bigger circle (38^2 x pi since the diameter is 76) and the area of the smaller circle is (19^2 x pi)
So.. 4534.16 (use 3.14 for) - 1133.54 = 3400.62 square yds

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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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4 years ago

5 - 7(x + 1) + 10x + 3<br> Show step by step on how to solve for x

Svet_ta [14]

1+3x

Distribute -7 through the parenthesis

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3 years ago

St. Patrick's Party Punch is made by combining one quart of lime sherbet, two quarts of pineapple juice, and two quarts of ginge

jeka57 [31]

Answer:

C :)

Step-by-step explanation:

125%/3=0.40 turn that into a percent which is 40%

4 0

3 years ago

Suppose you go to an ice cream shop which allows you to choose from 7 flavors of ice cream and 5 toppings. if you decide to get

alexdok [17]

The order doesn't matter.

$k$ objects can be chosen out of $n$ objects, when the order doesn't matter, in $C(n,k)=\dfrac{n!}{k!(n-k)!}$ ways.

So, the answer is $C(7,2)\cdot C(5,3)=\dfrac{7!}{2!5!}\cdot\dfrac{5!}{3!2!}=\dfrac{6\cdot7}{2}\cdot\dfrac{4\cdot5}{2}=210$ ways.

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3 years ago

Name five fractions that are near but are not equivalent to 4/12

melisa1 [442]

3/12
5/12
9/24 or aka 3/8
7/24
13/36
11/36

7 0

4 years ago

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