20. 35 students in a statistics class recently took a test over numerical data. On the test, the class had an average of a 78 and a standard deviation of 5. Assuming the data was normally distributed.
a. How many students scored below one standard deviation from the mean? (Hint: When you round, you cannot round up on the amount of people. Therefore,
you will need to round down to the nearest whole number for your answer)
b. What was the test score for the upper 24h percent? (Round to two decimal places)
Show your work.

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

answer   download the app called socratic on your phoner:

step-by-step explanation:

correct answer:

b.(19,-2)

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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