Answer:
The answer to the question is;
The probability that the resulting sample mean of nicotine content will be less than 0.89 is 0.1587 or 15.87 %.
Step-by-step explanation:
The mean of the distribution = 0.9 mg
The standard deviation of the sample = 0.1 mg
The size of the sample = 100
The mean of he sample = 0.89
The z score for sample mean is given by
where
X = Mean of the sample
μ = Mean of the population
σ = Standard deviation of the population
Therefore Z = 
= -1
From the standard probabilities table we have the probability for a z value of -1.0 = 0.1587
Therefore the probability that the resulting sample mean will be less than 0.89 = 0.1587 That is the probability that the mean is will be less than 0.89 is 15.87 % probability.
She can expect 70 to be ads since there is 10 times more emails so 7 times 10 is 70 so 70 ads
Answer: r = 11
Step-by-step explanation:
We know that the point (-2, r) lies on the graph of:
2*x + y = 7.
Then, if we that point is on the graph of the equation, we can replace the values and we will have:
2*(-2) + r = 7
and now we solve this for r-
-4 + r = 7
r = 7 + 4 = 11
r = 11
Answer:
if you make the 3.5 equal 7/2
and the 1.40 equal 7/5 its will be more easier
so7/5 × 7/2 its 4.9
sorry guys its not 4.9 i made mistake with 3.25 i was thinking that it was 3.50 any wwy
i have good method too
we can make 3.25 equal 13/4 and 1.40 equal 7/5 the multiply it
we will find 91/20 but we have problem its The 10 dont worry we can take the 10 from the both number and we will get 9.1/2 and We can devide easily now and the answer is 4.55
sorry iam trying so hard to speak engilish well sorry if u cannot understand me big respet for all the students
Answer:
B, 150
Step-by-step explanation:
use pythagorean theorem, the sides of the triangle are 120 and 90, so when u square them and add them together, you get 120^2 +90^2 = 22500
square root 22500 to find the hypotanuse which is the length from one corner to another. the anwser is 150m which is b
