Answer:
Step-by-step explanation:
Select the correct answer from each drop-down menu.
We solve using z score formula
z-score is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
The average time taken to complete a test follows normal probability distribution with a mean of 70 minutes and a standard deviation of 25 minutes.
a) The probability of a randomly selected student completing the test in 45 minutes or less is approximately equal to %.
z = 45 - 70/25
b) The probability of a randomly selected student completing the test in 95 minutes is %.
z = 95 - 70/25
Answer:
Step-by-step explanation:
The nth term of the sequence is
To get the first term, substitute n=1,
To get the second term, substitute n=2,
To get the third term, substitute n=3,
The sum of the first three terms is
We could also use the formula
to get the same result.
I hope this can help you.
Answer: 3
Step-by-step explanation:
105-18=87/7 12 12*7+18=102 so he was playing with three white marble
It will be 0.52 as a decimal.
