CAnd That Most Of The U Sto × x(G Chegg Study l Guided Solutio),G %Hw rno sect,

Question

CAnd That Most Of The U Sto × x(G Chegg Study l Guided Solutio),G %Hw rno sect, 61, 62 troon) c o o Not Secure of her race Terri Vogel, an a racer, averages 129.71 seconds per 2.5 mile lap (in a seven-lap race) with a standard deviation of 2.28 seconds. The s normally distributed. We are interested in one of her randomly selected laps. Part (a) -· the distance (in miles)ofeach race D the distance (n miles) of each lap O the time (in seconds) per lap Part (b) Part (c) 1 seconds. (Round your answer to two decimal places.) 7157 x% Part (d) 133 99 sec Part (e)

Explanation / Answer

Ans:

c)

z=(131-129.71)/2.28=0.565789

P(z<0.5658)=0.7142

71.42%

d)Fastest means which takes lesser time,so we have to find the x below which 3% of least times falls

P(Z<=z)=0.03

z=normsinv(0.03)=-1.881

x=129.71-1.881*2.28=125.42

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.