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Readme [11.4K]
2 years ago
15

The museum of natural history has an auditorium that can seat 200 people. A class of 45 students is seated in the auditorium for

a lecture. What decimal represents the portion of the seats in the auditorium that are empty ?
Mathematics
1 answer:
Sophie [7]2 years ago
5 0

Answer: 1.55

Step-by-step explanation:70 percent sure, might be .155

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The weekly salaries of sociologists in the United States are normally distributed and have a known population standard deviation
Lostsunrise [7]

Answer:

ME =z_{\alpha/2} \frac{\sigma}{\sqrt{n}}

The confidence level is 0.98 and the significance is \alpha=1-0.98 =0.02 and \alpha/2 =0.01 and the critical value using the table is:

z_{\alpha/2}= 2.326

And replacing we got:

ME=2.326 \frac{425}{\sqrt{22}}= 210.760\ approx 210.76

Step-by-step explanation:

For this case we have the following info given:

\sigma = 425 represent the population deviation

n =22 the sample size

\bar X =1520 represent the sample mean

We want to find the margin of error for the confidence interval for the population mean and we know that is given by:

ME =z_{\alpha/2} \frac{\sigma}{\sqrt{n}}

The confidence level is 0.98 and the significance is \alpha=1-0.98 =0.02 and \alpha/2 =0.01 and the critical value using the table is:

z_{\alpha/2}= 2.326

And replacing we got:

ME=2.326 \frac{425}{\sqrt{22}}= 210.760\ approx 210.76

3 0
2 years ago
How can you use 96 to demonstrate a pattern
Nitella [24]
9 - 6 is 3 
they all skip by threes?
hope that helps
8 0
3 years ago
5/9 - 2/6 ????????????
snow_tiger [21]
The answer in a fraction format is 2/9 or decimal format will be 0.222222222
8 0
3 years ago
Please help it’s urgent multiple choice
Sergeeva-Olga [200]

Answer:

Theta = 52.1

Step-by-step explanation:

sin theta = opp / hyp

sin theta = 15/19

Take the inverse sin of each side

sin^-1 sin theta = sin^1- (15/19)

theta =52.13635364

To the nearest tenth

Theta = 52.1

7 0
3 years ago
Find the intercepts: x+5y= -5
devlian [24]
X=-5 and y=1

you would replace the letter x or y with zero to find the intercept.
5 0
3 years ago
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