Rating
4.8/5

# Assignment help 555

Question 1

An engineer is going to redesign an ejection seat for an airplane. The seat was was designed for pilots between 120 lb and 171 lb. The new population of pilots has normally distributed weights with a mean of 129 lb and a standard deviation of  30.8 lb.

a. if a pilot is randomly selected, find the probability that the weight is between 120 lb and 171 lb.

round to four decimal places

P(120 &lt; X &lt; 171) = P( (120-129)/30.8 &lt; z &lt; (171-129)/30.8) = P( -0.29 &lt; z &lt; 1.36)= P( z &lt; 1.36 ) – P( z -0.29)= 0.9131 – 0.3859= 0.5272

## Why US?

##### 100% Confidentiality

Information about customers is confidential and never disclosed to third parties.

##### Timely Delivery

No missed deadlines – 97% of assignments are completed in time.

##### Original Writing

We complete all papers from scratch. You can get a plagiarism report.

##### Money Back

If you are convinced that our writer has not followed your requirements, feel free to ask for a refund.