Asample of 17 joint specimens of a particular type gave a sample mean proportional limit stress of 8.45 mpa and a sample standard deviation of 0.74 mpa. (a) calculate and interpret a 95% lower confidence bound for the true average proportional limit stress of all such joints. (round your answer to two decimal places.)

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.