This would be the second option. That is because a closed circle means that x could be 30, and shading to the left means that it could also be less than 30, which matches the description.
Answer:
Step-by-step explanation:
The number of samples is large(greater than or equal to 30). According to the central limit theorem, as the sample size increases, the distribution tends towards normal. The formula is
z = (x - µ)/(σ/√n)
Where
x = sample mean
µ = population mean
σ = population standard deviation
n = number of samples
From the information given,
µ = 22199
σ = 5300
n = 30
the probability that a senior owes a mean of more than $20,200 is expressed as
P(x > 20200)
Where x is a random variable representing the average credit card debt for college seniors.
For n = 30,
z = (20200 - 22199)/(5300/√30) =
- 2.07
Looking at the normal distribution table, the probability corresponding to the z score is 0.0197
P(x > 20200) = 0.0197
Answer:
The answer is 16 hours
Step-by-step explanation:
The Reason why it is 16 hours is simply because it says in the question
"The moon is around 239,000 miles from Earth. How many hours would it take a rocket that can travel at 250 MILES PER MINUTE to travel to the moon? Round to the nearest hour.
"
So, turn 16 hours into minutes, 16 X 60 = 960 X 250 miles per min = 240,000, miles there you go! the answer is B!
Seismometers measure: Body and surface waves
Do most damage above ground: surface waves
Can travel through liquids solids and gases: S waves
Only travel through solids: P-waves