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3 years ago

Select the property that allows the left member of the equation to be changed to the right member.

Mathematics

1 answer:

SOVA2 [1]3 years ago

6 0

I believe the property is Distributive Property.

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Chen rode his skateboard 3 3 4 miles in 3 4 of an hour. What was his average speed in miles per hour?

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2 years ago

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3 years ago

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2 years ago

Suppose that we are testing a coin to see if it is fair, so our hypotheses are: H0: p = 0.5 vs Ha: p ≠ 0.5. In each of (a) and (

aleksley [76]

Answer:

$H_0: p = 0.5\\H_a: p \neq 0.5$

a. We get 56 heads out of 100 tosses.

We will use one sample proportion test

x = 56

n = 100

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{56}{100}$

$\widehat{p}=0.56$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{100}}}$

= $1.2$

refer the z table for p value

p value = 0.8849

a. We get 560 heads out of 1000 tosses.

We will use one sample proportion test

x = 560

n = 1000

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{560}{1000}$

$\widehat{p}=0.56$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}$

= $3.794$

refer the z table for p value

p value = .000148

p value of part B is less than Part A because part B have 10 times the number the tosses.

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2 years ago

Does anyone know the answer to this question?

miv72 [106K]

a) means what is the probability of P occurring once Q has occurred. That is 9/24 which is 3/8.

b) is 14/24 which is 7/12.

Please inform me if I gave you the correct answers :)

3 0

2 years ago