The abc steel company manufactures steel bars. WHen the production process is working correctly, it turns out steel bars with an average length of at least 2.8 feet with a standard deviation of .2 foot. LOnger steel bars can be used or altered, but shorter bars must be scrapped. A sample of 25 bars is selected from the production. THe sample indicates an average length of 2.73 feet. the company wishes to determine if the production equipment needs an immediate adjustment. b. if the company uses a .05 level of significance and using the critical value (t value) approach to hypothesis testing would you reject of null hypothesis

b. x- 48 =120

step-by-step explanation:

29.5977692753

step-by-step explanation:

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %