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3 years ago

Hi! I'm just a bit confused on the vocabulary. What should be the null hypothesis? Thanks in advance!

Mathematics

2 answers:

lidiya [134]3 years ago

4 0

Answer:

null hypothesis: 20% of the newly hired candidates are women.

alternative hypothesis: out of 100% of the workers , only 40% are women and you 60% are male.

Digiron [165]3 years ago

4 0

The null hypothesis = 20% of candidates are females who applied.

The alternative hypothesis is that only 20% of this store is female, 80% is male.

Hope it helps!

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3 years ago

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Which binomial is a factor of x^2 + 6x + 5

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x+1

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3 years ago

A ball is thrown from an initial height of 1 meter with an initial upward velocity of 11 m/s. The ball's height h (in meters) af

bonufazy [111]

Answer:

$t=0.64$ and $t=1.56$ seconds

Step-by-step explanation:

$h=1+11t-5t^2\\\\6=1+11t-5t^2\\\\0=-5+11t-5t^2\\\\0=-5t^2+11t-5\\\\t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\t=\frac{-11\pm\sqrt{11^2-4(-5)(-5)}}{2(-5)}\\\\t=\frac{-11\pm\sqrt{121-100}}{-10}\\ \\t=\frac{-11\pm\sqrt{21}}{-10}\\\\t=\frac{11}{10}\pm\frac{\sqrt{21}}{10}\\ \\t_1\approx0.64\\\\t_2\approx1.56$

Therefore, the values of t for which the ball's height is 6 meters is $t=0.64$ and $t=1.56$ seconds.

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2 years ago