Mathematics: The fire department in a large city is examining its promotion policy to assess if there is evidence of age discrimination. A random sample of 248 promotion decisions over the past 5 years gives the following information: 39 or younger 40 or older Promoted 38 46 Not Promoted 80 84 This data will be used to test if there is a relationship between age and promotion decision. Required: a. If there were no relationship between age and whether or not a firefighter was promoted, how many firefighters

The fire department in a large city is examining

shay03littletop5kx2p

28.07.2021

Hence the answer is 44.032.

The value of $X^{2}$ -test statistic for this test 0.280.

Step-by-step explanation:

A) The number of fire-fighter of age 40 or older to be promoted ith observed value 46 is to be expected 44.032 as calculated above,

So the answer is 44.032.

B) The value of $X^{2}$ - test statistic is given by the formula,

$X^{2} =\sum \frac{\left ( O_{i}-E_{i} \right )^{2}}{E_{i}}\\X^{2} =0.97 +0.050+0.088+0.045\\X^{2} =0.280$

The value of $X^{2}$ -test statistic for this test 0.280.

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dragpack70

30.07.2021

p=-2

Step-by-step explanation:

Start off by adding 3 to both sides:

-6p-3=9

+3 +3

Now you have this:

-6p=12

Now divide both sides by -6

-6p/-6=12/-6

p=-2

I hope this helps, and have a great day! <3 :)

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