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3 years ago

Please answer the 3 questions (the first one I accidentally tapped)

Mathematics

2 answers:

choli [55]3 years ago

8 0

1,347 = 1.347 x 10^3

2,156 = 2.156 x 10^3

9,200,000 = 9.2 x 10^6

Alisiya [41]3 years ago

7 0

5. 1.347

6. 2.156 x 10(3)

7. 9.2 x 10(6)

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Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final c

Black_prince [1.1K]

Answer:

The test statistic value Z = 4.64 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

Test the claim that the proportion of all children in the town who suffer not from asthma is 11%

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 167

Given data In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma.

Sample proportion

$p^{-} = \frac{x}{n} = \frac{37}{167} = 0.2215$

Given Population proportion 'P' = 11% = 0.11

Step(ii) :-

Null Hypothesis : H₀ : p = 11

Alternative Hypothesis H₁: p≠11

Test statistic

$Z = \frac{p^{-} -P }{\sqrt{\frac{P Q}{n} } }$

$Z = \frac{0.2215 -0.11 }{\sqrt{\frac{0.11 X 0.89}{167} } }$

Z = 4.64

step(iii)

Critical value Z = 1.96

The calculated value Z = 4.64 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

Conclusion:-

Test the claim that the proportion of all children in the town who suffer not from asthma is 11%

4 0

3 years ago

What is the probability of the spinner landing on an odd number

Nadya [2.5K]

Answer:

1/50* 1/2 =0 .01

Step-by-step explanation:

First, the probability that the spinner lands on 20 is

1 /50

, as 20 is one of the 50 numbers on the wheel, and each number has an equal probability of being selected.

Second, the probability that the spinner lands on an odd number is

1/2

. This is because of the 50 numbers on the wheel, half are even and half are odd.

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2 years ago

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Genrish500 [490]

It would likely just be written as "two point four five", or "two and forty-five hundredths".

8 0

2 years ago

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PLEASE HELP ITS NOT ENGLISH!!!!!! Lol

Colt1911 [192]

Answer:

i think its x/y=2

Step-by-step explanation:

i could be wrong though, you should get a second opinion

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2 years ago

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Blizzard [7]

Answer:

She made 15 trials

Step-by-step explanation:

Well it said that she opened the book 15 times in total and records each time so the answer would be 15.

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2 years ago