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3 years ago

I need help with geometry

Mathematics

1 answer:

weqwewe [10]3 years ago

4 0

Answer:

the answer will be A

Step-by-step explanation:

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In a sample of 41 temperature readings taken from the freezer of a restaurant, the mean is 29.7 degrees and the population stand

yKpoI14uk [10]

Answer: $=(29.1596\text{ degrees},\ 30.2404\text{ degrees})$

Step-by-step explanation:

Given: Sample size: n = 41

Sample mean $\overline{x}= 29.7$ degrees

Population standard deviation $\sigma=2.7$ degrees

Confidence level (c) = 80% =0.80

Significance level (a) = 1- c = 1-0.80 = 0.20

z-score for 80% confidence level : z = 1.2816 [from z-table]

Confidence level for population mean :-

$\overline{x}\pm z\dfrac{\sigma}{\sqrt{n}}$

$=29.7\pm ( 1.2816)\dfrac{2.7}{\sqrt{41}}$

$=29.7\pm ( 1.2816)\dfrac{2.7}{6.403124}$

$=29.7\pm ( 1.2816)(0.42167)$

$=29.7\pm 0.5404$

$=(29.7-0.5404,\ 29.7+0.5404)$

$=(29.1596,\ 30.2404)$

Hence, 80% confidence interval for the temperatures in the freezer $=(29.1596\text{ degrees},\ 30.2404\text{ degrees})$

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3 years ago

How to solve the following quadratic equations; 2L, m, o, 3a and g

s2008m [1.1K]

Answer:

Please see the attached pictures for full solution.

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3 years ago

Which are prisms in which are pyramids

UNO [17]

I don’t see a picture to answer this

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3 years ago

5x - x = -12 what is x???

aleksley [76]

X would equal -3. 5x-3 would equal -15, and 2 negatives would equal a positive. So, -15+3 would equal -12.

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3 years ago

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How do I graph y=0.17x?

Tomtit [17]

Answer: you can use desmos and type it in just like that a graph will pop up. Go to google and type in desmos

Step-by-step explanation:

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3 years ago