Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that σ = 4 psi. a random sample of 8 specimens is tested, and the average breaking strength is found to be 98 psi. find a 95% two-sided confidence interval on the true mean breaking strength. round the answers to 1 decimal place.

Step-by-step explanation:

Given : Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that σ = 4 psi.

A random sample of 8 specimens is tested, and the average breaking strength is found to be 98 psi.

i.e. n= 8  and

Critical value for 95% confidence =

Confidence interval for population mean :-

i.e.

Hence,  a 95% two-sided confidence interval on the true mean breaking strength. =

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76