3 years ago

2 less than a number

Mathematics

2 answers:

Umnica [9.8K]3 years ago

7 0

Answer:

-2

Step-by-step explanation:

tamaranim1 [39]3 years ago

4 0

2 < x is the answer I believe

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You are conducting a study to test whether there is a difference in the mean number of alcoholic drinks consumed per evening bet

salantis [7]

The value of test statistic is 5.45

Data;

n1 = 25
n2 = 30
x1 = 6.2
x2 = 3.8
s1 = 2
s2 = 1

<h3>Test Statistic</h3>

The formula to calculate the test statistic is given as

$t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2} } } \\$

Let's substitute the values and solve for t

$t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2} } } \\t = \frac{6.2 - 3.8}{\sqrt{\frac{2^2}{25} + \frac{1^2}{30} } } \\t = \frac{2.4}{0.44} = 5.45$

The value of test statistic is 5.45

Learn more on test statistic here;

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8(1 + 5x) + 5= 13 + 5x

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Answer:

0 will be answer as shown in image

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4 years ago

Find the mean median and interquartile for the data set below

natita [175]

mean: 14.5

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I believe those are correct

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