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2 years ago

PLZ HELP MEEEEEEEHHHHH

Mathematics

2 answers:

musickatia [10]2 years ago

5 0

Answer:

63.5°

Step-by-step explanation:

sin(x) = opposite/hypotenuse

sin(x) = 17/19

x = 63.4746479834

vodomira [7]2 years ago

3 0

Answer:

x = 63.5

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opposite/ hypotenuse

sin x = 17/19

Take the inverse sin of each side

sin ^-1 (sin x) = sin ^ -1 (17/19)

x =63.47464798

To the nearest tenth

x = 63.5

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Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Rachel recorded the number of calls she made at work during the week:

Dmitry [639]

The chi-squared test statistic will be 3.11. The test statistic is contrasted with a predicted value based on the Chi-square distribution.

<h3>What is the chi-squared test statistic?</h3>

Finding the squared difference between the actual and anticipated data values, then dividing that difference by the expected data values, constitutes the test statistic.

The formula for the chi-squared test statistic is;

$\sum \frac{(O_i-E_i)^2}{E_i } \\\\$

Where,

$\rm O_i$ is the observed value

$\rm E_i$ is the expected value

The chi-square test statics is;

$\rm( \frac{18-18}{18} )^2 +( \frac{14-18}{18} )^2 + (\frac{24-18}{18} )^2+( \frac{16-18}{18} )^2 \\\\ 0+ \frac{16}{18}+ \frac{36}{18} +\frac{4}{18}\\\\ \frac{56}{18} \\\\ 3.11$