8/17/2019 CL 3_SET 1

1/4

8/17/2019 CL 3_SET 1

2/4

!. () Exercise 7- No 7-!7-!. ?*" pipe is mnu%ctured &ith men dimeter o% .565 nd stndrd deition

o% /.//cm. ind the pro##i$ity tht rndom smp$e o% n B 9 sections o% pipe &i$$ he

smp$e en dimeter greter thn .56/cm nd $ess thn .57/cm.

(#) Exercise 7- No 7-57-5. synthetic C#er used in mnu%cturing crpet hs tensi$e strength tht is norm$$y

distri#uted &ith men 5/:Nm nd stndrd deition 5:Nm. ind the pro##i$ity

tht rndom smp$e o% n B 6 C#er specimens &i$$ he smp$e men tensi$e strength

tht exceeds 55:Nm.

4. () Exercise -1 No -1.-1.An rtic$e in the

8/17/2019 CL 3_SET 1

3/4

(c) 2uppose tht you &nted to #e 95O conCdent tht the error in estimting the

men temperture is $ess thn degrees "e$sius. ht smp$e siHe shou$d #e

used+(d) 2uppose tht you &nted the tot$ &idth o% the t&o-sided conCdence inter$

on men temperture to #e 1.5 degrees "e$sius t 95O conCdence. ht smp$e

siHe shou$d #e used+

5. (A) 2upp$ement$ Exercise No -6 (#cde)-9.An rtic$e in the

8/17/2019 CL 3_SET 1

4/4