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3 years ago

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Suppose that a rectangular piece of glass has a perimeter of 20 meters. If we multiply both its length and its width by 4, what

will be the perimeter of the new rectangular piece of glass?
A. 65 m

B. 80 m
C. 34 m
D. 45 m

1 answer:

goldenfox [79]3 years ago

3 0

Answer:

Answer B is the correct answer

Step-by-step explanation: :)

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Answer:

t-distribution should be used to construct a confidence interval.

Step-by-step explanation:

We are given that a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50.

We have to determine whether a normal distribution (Z values) or a t- distribution should be used or whether neither of these can be used to construct a confidence interval.

<em><u>Since in this question we are provided with;</u></em>

Sample average weekly food expense, $\bar X$ = $95.60

Sample standard deviation, s = $22.50

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The distribution that we will use here to construct a confidence interval will be <u>t-distribution</u> because in the question we don't know anything about population standard deviation $(\sigma)$ .

Normal distribution is used when we know population standard deviation $(\sigma)$ .

So, the pivotal quantity for confidence interval that will be used is One-sample t-test statistics;

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Help me with this answer please

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I’m not sure but if it’s LCM it’s 60 if it’s GCF it’s 1

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Answer:

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Step-by-step explanation:

we have to find out for how many positive values of n are both

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