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vesna_86 [32]
3 years ago
11

A student takes a 10-question, true/False exam and guesses on each question. Find the probability that the student will get exac

tly 6 correct out of 10
Mathematics
1 answer:
bazaltina [42]3 years ago
3 0

Answer:

false

Step-by-step explanation:

10-6+10 probability is 14

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Answer the following questions about complementary angles. Complementary angles are 2 angles that add up to 90 degrees.
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Answer:

2=70 ,4=42, 6=75

Step-by-step explanation:

Subtract each number by 90 to find the missing complementary angle.

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3 years ago
Which is equal to -214°?
Neporo4naja [7]
Answer: -107pi/45 radians
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The mayor of a town has proposed a plan for the construction of a new community. A political study took a sample of 800 voters i
Hunter-Best [27]

Answer:

A political strategist wants to test the claim that the percentage of residents who favor construction is more than  30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: p \leq 0.3

Alternative hypothesis p >0.3

Step-by-step explanation:

We have the following info given from the problem:

n= 800 the random sample of voters selected from the town

\hat p = 0.34 represent the proportion of residents favored construction

p_o = 0.30 represent the value desired to test.

A political strategist wants to test the claim that the percentage of residents who favor construction is more than  30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: p \leq 0.3

Alternative hypothesis p >0.3

And in order to test this hypothesis we can use a one sample z test for a population proportion and the statistic would be given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

And with the data given we have:

z=\frac{0.34 -0.3}{\sqrt{\frac{0.3(1-0.3)}{800}}}=2.469  

7 0
3 years ago
What is the square root of 9/49 <br> answer has to be a fraction :)
soldi70 [24.7K]

Answer:

3/7

Step-by-step explanation:

√9 = 3

√49 = 7

√9/49 = 3/7

4 0
3 years ago
Read 2 more answers
If point C lies between two points A and B such that AC=BC, then
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Answer:

If point C lies between two points A and B such that AC=BC, then point C is the bisector of A and B, that means it is at right the centre.

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3 years ago
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