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mrs_skeptik [129]
3 years ago
7

A school is organizing a cookout where

Mathematics
1 answer:
mariarad [96]3 years ago
6 0

Answer:

108

Step-by-step explanation

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A random sample of 10 employees of a company was selected to estimate the mean one-way commute time for all employees at the com
liberstina [14]

Answer:

The margin of error is of 2.262\frac{6}{\sqrt{10}} = 4.29

Step-by-step explanation:

We have the standard deviation for the sample. So the T-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 10 - 1 = 9

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 9 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.262

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.262\frac{6}{\sqrt{10}} = 4.29

In which s is the standard deviation of the sample and n is the size of the sample.

8 0
3 years ago
The expression has exactly 2 terms terms true or false 7f + 15 - 2g
Dvinal [7]

In this case, the answer is very simple.

A term is a part not separated by the signs + or - .

In this expression, we have 3 terms.

The answer is: false.

3 0
1 year ago
19 times 8 in expanded form
andrew-mc [135]

10+9 x 8 = 100+50+2 (152)

3 0
3 years ago
How can you find unknown lengths or widths in an easy way?<br> 30 points!
Nadusha1986 [10]
Since you are in middle school, I will assume simple shapes such as rectangles and squares

area=legnth times width
therefor
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legnth=area/width
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What is 154 multiplied by 754
Anastasy [175]

Answer:

116116

Step-by-step explanation:

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