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zlopas [31]
3 years ago
7

Involving fractions, which whole is divided into fourths? Pick as many, fractions of 4s, 5s, 6s, 8s, and/or 10s.

Mathematics
1 answer:
TEA [102]3 years ago
8 0
We start as 4 8 12 16 20 24that are all divided into the fourth
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A survey of 1,562 randomly selected adults showed that 522 of them have heard of a new electronic reader. The accompanying techn
tester [92]

Answer:

a) We want to test the claim that 35​% of adults have heard of the new electronic reader, then the system of hypothesis are.:  

Null hypothesis:p=0.35  

Alternative hypothesis:p \neq 0.35  

And is a two tailed test

b) z=\frac{0.334 -0.35}{\sqrt{\frac{0.35(1-0.35)}{1562}}}=-1.326  

c) p_v =2*P(z  

d) Null hypothesis:p=0.35  

e) Fail to reject the null hypothesis because the P-value is greater than the significance level, alpha.

Step-by-step explanation:

Information provided

n=1562 represent the random sample selected

X=522 represent the people who have heard of a new electronic reader

\hat p=\frac{522}{1562}=0.334 estimated proportion of people who have heard of a new electronic reader

p_o=0.35 is the value to verify

\alpha=0.05 represent the significance level

z would represent the statistic

p_v represent the p value

Part a

We want to test the claim that 35​% of adults have heard of the new electronic reader, then the system of hypothesis are.:  

Null hypothesis:p=0.35  

Alternative hypothesis:p \neq 0.35  

And is a two tailed test

Part b

The statistic for this case is given :

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

Replacing the info given we got:

z=\frac{0.334 -0.35}{\sqrt{\frac{0.35(1-0.35)}{1562}}}=-1.326  

Part c

We can calculate the p value using the laternative hypothesis with the following probability:

p_v =2*P(z  

Part d

The null hypothesis for this case would be:

Null hypothesis:p=0.35  

Part e

The best conclusion for this case would be:

Fail to reject the null hypothesis because the P-value is greater than the significance level, alpha.

5 0
3 years ago
Please help? , no decimals please,please explain to see picture. ​
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Answer:

8x\sqrt{3xy

Step-by-step explanation:

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2 years ago
The ratio of a model building's dimensions to the building's actual dimensions is 1/20. If the height of the model is 18 inches,
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Explanation:
x = 18/1/20
x = 18 x 20
x = 360ft
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3 years ago
You have invited friends over
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Answer:

16

Step-by-step explanation:

Each could be watched in the places of 1,2,3 or 4. So each movie has 4 places it could be. Since you rented 4 movies you would do 4x4 which equals 16.

7 0
3 years ago
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A ball is dropped from the top of a 50 ft. building. The function h(t)= -16t^2+50 models the height of the ball, h(t) (in feet),
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h(.5)= -16(.5)^2 + 50

= 46

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