You are told that a random sample of 150 people from iowa has been given cholesterol tests, and 60 of these people had levels over the "safe" count of 200. construct a 95% confidence interval for the population proportion of people in iowa with cholesterol levels over 200. what is the upper value of the confidence interval?

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

i got 10.28 but that rounds up to 10.3

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

answer: y=0 if that is what u r looking for