3 years ago

A cat has 24 whiskers by its nose.

Mathematics

1 answer:

Kaylis [27]3 years ago

8 0

Answer:

600 whiskers

Step-by-step explanation:

If you multiply 24 by 25 you get 600

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Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts

Hunter-Best [27]

Answer:

The value of the test statistic is $t = 2.1$

Step-by-step explanation:

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected value, $\sigma$ is the standard deviation and n is the size of the sample.

The level of ozone normally found is 7.5 parts/million (ppm).

This means that $\mu = 7.5$

The mean of 24 samples is 7.8 ppm with a standard deviation of 0.7.

This means that $X = 7.8, \sigma = 0.7, n = 24$

Test Statistic:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{7.8 - 7.5}{\frac{0.7}{\sqrt{24}}}$

$t = 2.1$

The value of the test statistic is $t = 2.1$

7 0

3 years ago

2.7 (7.8)??? I don't know how to work this problem...

ruslelena [56]

Just multiply the two, your answer should be 21.06

8 0

4 years ago

Read 2 more answers

Please help need asap

larisa86 [58]

Answer to the nearest tenth is 20.8

4 0

2 years ago

Simplify by combining like terms: -5x - 13 + 7y + 26x *

sergeinik [125]

Your answer will be 21x+7y-13

8 0

3 years ago

Worth 60points!!!!!

EastWind [94]

Answer:

X=4

Step-by-step explanation:

2÷\frac{1}{2}=4

6 0

3 years ago