I would go with b. the mean age of all students in her middle school is likely to be close to 11.6.
Because she used a simple random sample, the outcome is likely to be an accurate representation of the entire middle school. It might not be exact, but likely close to 11.6.
Answer: the z score is - 1.5
Step-by-step explanation:
Since the time required to finish a test is normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = time required to finish the test
µ = mean time
σ = standard deviation
From the information given,
µ = 60 minutes
σ = 10 minutes
We want to find the z-score for a student who finishes the test in 45 minutes
For x = 45,
z = (45 - 60)/10 = - 15/10 = - 1.5
Answer:
Step-by-step explanation:
Given
Required
Write as exponential function
An exponential function is represented as:
Apply law of indices
<em>The above represents the exponential function</em>
If there are 16 cups in one gallon, each gallon u add 16. If you have 3 gallons you add 16 3 times. So to get your answer you multiply 16 by three which is 48 cups.