WHO WANTS TO BE MY BSF? IF YOU DON'T....... THENNNN OH WELLLLLLLLLLLL
2 answers:
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Answer:
Step-by-step explanation:
Consider the quadratic equation, we have
Dividing the equation by a, we get
Put on the other side,
Add on both the sides,
completing the square, we have
Now, solving for x,
Multiply right side by ,
which is the required quadratic formula.
Answer:
B) TS = -6.51, p-value = 0.0000
Step-by-step explanation:
Sample size, n = 39
μ = 7.5 cm
Null hypothesis, H₀ = 7.5 cm
(I.e. Average height of youngest child is 7.5 cm)
Alternative hypothesis, (The youngest child's age is underestimated by 7.5 cm)
Standard deviation,
In order to be able to reject the null hypothesis,
the formula for the test statistic:
t = -6.51
P - value
P(x < 7.5) = P(z < -6.51)
Checking the p-value for z < -6.51 in the normal distribution table
P(z < -6.51) = 0.0000
p - value = 0.0000