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user100 [1]
3 years ago
8

A research organization wanted to estimate the average number of hours a college student sleeps per night during the school year

. After randomly sampling 150 college​ students, the research organization determined the following​ 95% confidence​ interval: (7.1,7.5)​ hours/night. What is the value of the average number of hours slept per night during the school year for these 150 college​ students?
Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
4 0

Answer:

Step-by-step explanation:

Given given that

  • Lower confidence interval = 7.1
  • Upper confidence interval = 7.5
  • As such, We are 95% confident that it's somewhere between 7.1 and 7.5 hours per night

Average value = LCI + UCI /2 = 7.1 + 7.5 / 2

= 7.3hours per night, so we are 95% confident that it's somewhere between 7.1 and 7.5 hours per night which is eventually 7.3hrs per night.

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Serga [27]

Answer:

1,176 square centimeters

Step-by-step explanation:

The computation of the area of the mosaic is  shown below:

As we know that

The Area of the triangle is

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Now 1 tile would be 14 square centimeters

And, there are 84 tiles in the mosaic

So, the total area is

= 84 × 14

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6 0
2 years ago
RT is a midsegment of triangle UQS.
kvasek [131]

245 because it has rt and then number s one
4 0
3 years ago
Can someone please tell me how to solve this?: -27 , exponent 2/3<br><br><br><br> -27^2/3
Vlada [557]
So this is asking the cube root of -27 then squared.
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And -3^2=9

So I believe your answer is 9
4 0
3 years ago
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Yuliya22 [10]
X=number of pounds
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3 0
3 years ago
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MariettaO [177]

Answer:

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