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3 years ago

7

Using the given conversion table, match the distances in yards, inches, or miles to their equivalent distances in feet. Ratio Co

nversion Table mile : yard 1 : 1,760 yard : feet 1 : 3 feet : inch 1 : 12

2 answers:

Zarrin [17]3 years ago

6 0

1. 1mile That is my answer

sveta [45]3 years ago

6 0

It around 1 mile is the right answer

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Answer:

We know that n = 50 and p =0.78.

We need to check the conditions in order to use the normal approximation.

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Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

We know that n = 50 and p =0.78.

We need to check the conditions in order to use the normal approximation.

$np=50*0.78=39 \geq 10$

$n(1-p)=50*(1-0.78)=11 \geq 10$

Since both conditions are satisfied we can use the normal approximation and the distribution for the proportion is given by:

$p \sim N (p, \sqrt{\frac{p(1-p)}{n}})$

With the following parameters:

$\mu_ p = 0.78$

$\sigma_p = \sqrt{\frac{0.78*(1-0.78)}{50}}= 0.0586$

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Andrews [41]

Answer:

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I hope this helps!

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3 years ago