In a review, 510 U.S grown-ups were found out if they drive a pickup truck and whether they drive a Passage. The outcomes showed that three out of ten grown-ups studied drive a Passage. Of the grown-ups overviewed that drive

Passages, two of every nine drive a pickup truck. Discover the likelihood that a haphazardly chosen grown-up drives a Portage and drives a pickup truck.**

13,14.The parkway efficiency of a 2016 Lexus RX 350 FWD 6-chamber 3.5-L programmed 5-speed utilizing premium fuel is an ordinarily disseminated irregular variable with a mean of = 25.25 mpg and a standard deviation of = 2.00 mpg.

(a) What is the standard mistake of X

X , the mean from an irregular example of 9 fill-ups by one driver? (Round your response to 4 decimal spots.)

Standard mistake of X

X

(b) Inside what span would you expect the example intend to fall, with 95% likelihood? (Round your responses to 4 decimal spots.)

The span is from to

this is mistaken:

a) 0.2222

b) From 24.8144 to 25.6856

Clarification:

a) standard blunder =

n

=92.00

= 0.2222

b) CI = + z*

n at 95% certainty level z =1.96 consequently

CI = 25.25 + 1.96*0.2222

= (24.8144 , 25.6856)

I'm adding an and be to the appropriate response box and it shows wrong . I don't comprehend . four dicimals that 0.2222