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
Answer - 17 days
We know that the total cost cannot be greater than 475. So set the equation 25x+50=475. Now solve for x. You should get x=17 as your answer.
Answer:
1=z
Step-by-step explanation:
Multiply 15 to the parenthesis.
12=15z-15/5
12=15z-3
Add 3 to both sides
15=15z
Simplify
1=z
The answer is D. because if there is 32 total, and 18 of them are girls, that means that there are 14 boys . with the question asking for girl/boy ratio it would have to be 18/14 in that order . if you divide 18 and 14 by two, they simple down to 9/7 . making the answer D.
Answer:A,B? ... i think
Step-by-step explanation:
