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zhuklara [117]
3 years ago
9

Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two

Mathematics
1 answer:
telo118 [61]3 years ago
8 0

Answer:

8 cm , 9cm

Step-by-step explanation:

sum of any two sides >third side

difference of any two sides<third side

only 8 cm and 9 cm satisfies it

8+9=17>13

9-8=1<13

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Answer:

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Step-by-step explanation:

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The proportion of students at a college who have GPA higher than 3.5 is 19%. a. You take repeated random samples of size 25 from
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Answer:

\mu_{\hat{p}}=0.19

\sigma_{\hat{p}}=0.0785

Step-by-step explanation:

We know that the mean and the standard error of the sampling distribution of the sample proportions will be :-

\mu_{\hat{p}}=p

\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}

, where p=population proportion and n= sample size.

Given : The proportion of students at a college who have GPA higher than 3.5 is 19%.

i.e. p= 19%=0.19

The for sample size n= 25

The mean and the standard error of the sampling distribution of the sample proportions will be :-

\mu_{\hat{p}}=0.19

\sigma_{\hat{p}}=\sqrt{\dfrac{0.19(1-0.19)}{25}}\\\\=\sqrt{0.006156}=0.0784601809837\approx0.0785

Hence , the mean and the standard error of the sampling distribution of the sample proportions :

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\sigma_{\hat{p}}=0.0785

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