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3 years ago

Why does a lawn mower live such a hard life

Mathematics

2 answers:

olchik [2.2K]3 years ago

7 0

Cause all it does it cut grass lol

Ivanshal [37]3 years ago

5 0

It only lives a hard life if you use it on rocks

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A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

Alex_Xolod [135]

Answer:

95% confidence interval for the population mean is 20.255 and 17.945

Step-by-step explanation:

given data

mean = 19.1

standard deviation = 1.5

n = 9

to find out

95% confidence interval for the population mean

solution

we know 95% confidence interval formula i.e.

mean +/- t * standard deviation/ $\sqrt{n}$ .............1

here t for 9 students 2.31 ( from t table)

so put all value n t standard deviation and mean in equation 1

= mean +/- t * standard deviation/ $\sqrt{n}$

= 19.1 +/- 2.31 * 1.5/ $\sqrt{9}$

= 20.255 and 17.945

95% confidence interval for the population mean is 20.255 and 17.945

7 0

3 years ago

Which of the following numbers in the data set is an outlier? 21, 23, 19, 25, 83, 23, 21

postnew [5]

The outlier in this set of data is 83.

The outlier in a data set is any number that is <em>much </em>higher or lower than the average of the set.

83 is nowhere near the average of 23 in this set, and so it is the sole outlier.

Hope this helps!

6 0

3 years ago

Find the solution for this equation<br> 2(h-8)-h=h+19

icang [17]

2(h - 8) - h = h + 19
2h - 16 - h = h + 19
h - 16 = h + 19
h - h = 19 + 16
0 = 35

Therefore, it has no solution.

7 0

3 years ago

I cannot solve the equation. <br> √(7d+1)-4=11

emmainna [20.7K]

Answer:

I believe the answer is d = 32

Step-by-step explanation:

You should isolate the radical, then raise each side of the equation to the power of its index.

8 0

3 years ago

Read 2 more answers

If 32% of a number is 64, what is the number?

My name is Ann [436]

This answer is 200 because 64x100/32

5 0

3 years ago