Complete question :
The birthweight of newborn babies is Normally distributed with a mean of 3.96 kg and a standard deviation of 0.53 kg. Find the probability that an SRS of 36 babies will have an average birthweight of over 3.9 kg. Write your answer as a decimal. Round your answer to two places after the decimal
Answer:
0.75151
Step-by-step explanation:
Given that :
Mean weight (m) = 3.96kg
Standard deviation (σ) = 0.53kg
Sample size (n) = 36
Probability of average weight over 3.9
P(x > 3.9)
Using the z relation :
Zscore = (x - m) / (σ / √n)
Zscore = (3.9 - 3.96) / (0.53 / √36)
Zscore = - 0.06 / 0.0883333
Zscore = −0.679245
Using the Z probability calculator :
P(Z > - 0.679245) = 0.75151
= 0.75151
Answer:2
Step-by-step explanation:
Answer:
39.5
Step-by-step explanation:
We put the numbers in order least to greatest and pick the middle one because that number is the median:
36, 38, 39, 39, 40, 47, 48, 51
Since 39 and 40 are tied for the median we go in between those two numbers, 39.5. The answer is 39.5.
Answer: 27
Step-by-step explanation:
Tom is 57 now. In 3 years he will be 60, but also twice as old as his son. 1/2 of 60 is 30. 30 minus the 3 years that hasn’t happened yet equals 27.
The value of the digit is 40,000 because 4 is in the ten thousands place