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4 years ago

10

A high school soccer goalie blocked the ball from going into the goal 4 out of 5 times. If the ball was kicked toward the goal 2

5 times, how many blocks did the goalie make?

1 answer:

tangare [24]4 years ago

8 0

This is a proportion

Do 5*5

And 4*5

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Since an instant replay system for tennis was introduced at a majorâ tournament, men challenged 1399 refereeâ calls, with the re

prohojiy [21]

Answer: The value of test statistic is 0.696.

Step-by-step explanation:

Since we have given that

$n_1=1399\\\\x_1=411\\\\p_1=\dfrac{x_1}{n_1}=\dfrac{411}{1399}=0.294$

Similarly,

$n_2=759, x_2=211\\\\p_2=\dfrac{x_2}{n_2}=\dfrac{211}{759}=0.278$

At 0.01 level of significance.

Hypothesis are :

$H_0:P_1=P_2=0.5\\\\H_a:P_1\neq P_2$

So, the test statistic value would be

$z=\dfrac{(p_1-p_2)-(P_1-P_2)}{\sqrt{\dfrac{P_1Q_1}{n_1}+\dfrac{P_2Q_2}{n_2}}}\\\\z=\dfrac{0.294-0.278}{\sqrt{0.5\times 0.5(\dfrac{1}{1399}+\dfrac{1}{759})}}\\\\z=\dfrac{0.016}{0.023}=0.696$

Hence, the value of test statistic is 0.696.

3 0

3 years ago

What is the radius & diameter of this circle?

____ [38]

Answer:

The diameter is 13cm and the radius is 6.5cm

Step-by-step explanation:

The diameter is the line that goes across the circle and the radius is half the diameter. So...

13cm is the diameter

divide by 2 to get the radius...

6.5 cm

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3 0

3 years ago

I need help with this question can someone give me the answer?

Mrac [35]

Answer:

I’d say the first one!!!

Step-by-step explanation:

Most reasonable

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3 years ago

What is the standard form of 4(x+1)(x+7)

fredd [130]

Answer:

y+4 = -7 (x-1)

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Kisachek [45]

B. an internal retaining ring
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