An izod impact test was performed on 20 specimens of pvc pipe. the sample mean is x overscript bar endscripts equals 1.14 and the sample standard deviation is s = 0.28. find a 99% lower confidence bound on the true izod impact strength. assume the data are normally distributed. round your answer to 3 decimal places. entry field with incorrect answer 1.319 less-than-or-equal-to

1.791

Step-by-step explanation:

Confidence interval for normal distributions can be stated in the formula

M±zσ where

Thus, 99% lower confidence bound on the true Izod impact strength is

1.14+(2.326*0.28) = 1.791

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value