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3 years ago

Given 1 inch - 2.54 centimeters enter the values that will complete this expression for converting 3 5 feet to centimeters

Mathematics

1 answer:

anygoal [31]3 years ago

4 0

Answer:

If 1 inch= 2.54 centimeters, 12 inches or 1 foot = 30.48 centimeters, so 3.5 feet = 106.68 centimeters

Step-by-step explanation:

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In a random sample of 30 people who rode a roller coaster one day, the mean wait time is 46.7 minutes with a standard deviation

Rainbow [258]

Answer: C. $(29,\ 37.8)$

Step-by-step explanation:

The confidence interval for difference of two population mean is given by :-

$\overline{x}_1-\overline{x}_2\pm z_{\alpha/2}\sqrt{\dfrac{s_1^2}{n_1}+\dfrac{s_2^2}{n_2}}$

Given : Level of significance : $1-\alpha:0.99$

Then , significance level : $\alpha: 1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=2.576$

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$46.7-13.3\pm(2.576)\sqrt{\dfrac{9.2^2}{30}+\dfrac{1.9^2}{50}}\approx33.4\pm4.38=(29.02\ ,37.78)\approx(29,\ 37.8)$

Hence, a 99% confidence interval for the difference between the mean wait times of everyone who rode both rides $(29,\ 37.8)$

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3 years ago

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juin [17]

Answer:

Step-by-step explanation:

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3 years ago

Help and explain pllzz asap

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4 years ago

Read 2 more answers

Given 1 inch - 2.54 centimeters enter the values that will complete this expression for converting 3 5 feet to centimeters​

Given 1 inch - 2.54 centimeters enter the values that will complete this expression for converting 3 5 feet to centimeters