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3 years ago

7

Sara goes on a slingshot ride in an amusement park. She is strapped into a spherical ball that has a radius 3*10^2 of centimeter

s. What is the volume of air in the spherical ball? Use this formula:volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

2 answers:

zmey [24]3 years ago

7 0

9.4238587689846999_(

anastassius [24]3 years ago

5 0

The answer is 9.42385

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Criterion: Identify IV, DV, and hypotheses and evaluate the null hypothesis for an independent samples t test. Data: Use the inf

Papessa [141]

The table is missing in the question. The table is provided here :

Group 1 Group 2

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21.99 20.46 standard deviation

7 7 n

Solution :

a). The IV or independent variable = Group 1

The DV or the dependent variable = Group 2

b).

$H_0: \mu_1 = \mu_2$

$H_a:\mu_1 < \mu_2$

Therefore, $t = \frac{\bar x_1 - \bar x_2}{\sqrt{\frac{s_1^2}{n_1}+\frac{S_2^2}{n_2}}}$

$t = \frac{34.86 - 64.14}{\sqrt{\frac{21.99^2}{7}+\frac{20.46^2}{7}}}$

t = -2.579143

Now, $df = min(n_1 - 1, n_2 - 1)$

df = 7 - 1

= 6

Therefore the value of p :

$=T.DIST(-2.579143,6,TRUE)$

= 0.020908803

The p value is 0.0209

$p< 0.05$

So we reject the null hypothesis and conclude that $\mu_1 < \mu_2$

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2 years ago

What is the perimeter of the shape below?<br> 3 cm<br> 4 cm<br> 8 cm<br> 4 cm

UNO [17]

Answer:

:D

Step-by-step explanation:

it is 19 cm

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2 years ago

The GRE is an entrance exam that most students are required to take upon entering graduate school. In 2014, the combined scores

Ede4ka [16]

$\mathbb P(286$
$\mathbb P(286$

The empirical rule says that approximately 68% of any normal distributed data set lies within one standard deviation of the mean.

$\mathbb P(-2$
$\implies\mathbb P(-2$

The same rule states that about 95% lies within two standard deviations of the mean. Using this rule, and the fact that any normal distribution is symmetric about its mean, you have

$\mathbb P(-2$
$0.95=2\mathbb P(-2$
$\implies\mathbb P(-2$

$\implies\mathbb P(-2$

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3 years ago

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Blizzard [7]

Answer:

Step-by-step explanation: 6z=-2-10

6z= -12

z=-12/6

then z= -2

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2 years ago

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What is the volume of the figure below, in cubic centimeters?<br><br> 756<br> 936<br> 1008<br> 1080

irina1246 [14]

936 I think is the best answer

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3 years ago