A2 statistics practice (i need solving questions 5-7)

5. Given a specific value of , the corresponding value is obtained from

You're given and that when . This means

6. Same as 3 and 4. I assume you have a calculator you can use to find . You should get around 0.9878.

7. We're told that 18.72 is 1.5 standard deviations below the mean of 31.5. This translates to

step-by-step explanation:

milk=16 large

soda=280 kids

juice box=82 regular

63 soda +63 regular

124 large total

you ignore the remainder, therefore the answer is y = x+2

step-by-step explanation:

you have to divide the denominator by the numerator. you can use synthetic division or long division.

[-5] .     1 .     7 .     11

x + 2 + 1/x+5