Let Monique have m brushes.
Chelsea then has <span>11m brushes because she has 11 times as many as Monique. Together they total 60 brushes, so we form the equation:
m+11m=60.
Thus 12m=60, and dividing both sides by 12 gives m=5.
Chelsea has 11m=11*5=55 brushes.
Answer: 55</span>
To tackle this issue, we need to utilize the t statistic. This requires calculating the t score first and then consulting standard distribution tables to find the corresponding p value based on the obtained t score.
The formula for calculating the t score is:
t = (x – μ) / (σ / sqrt(n))
Where,
x = sample mean = 40
n = number of sample subjects = 16
s = standard deviation = 20
μ = Population Mean = 30
Plugging in the known values:
t = (40 – 30) / (20 / sqrt 16)
t = 10 / 5
t = 2
Utilizing the standard distribution tables and calculating the degrees of freedom, which is n – 1 = 15, we then find:
p = 0.032
