Question

hello Can I ask one questıon? please help me?

Answer 1

that's the point of this site. ask away

Answer 2

umm, i take it you arnt going to ask that question then?

Answer 3

A consumer organization wants to estimate the actual tread wear index of a brand name of tires that claims "graded 200" on the sidewall of the tire. A random sample of n=16 indicates a sample mean tread wear index of 192.6 and a sample standard deviation of 29.6.
a. Assuming that the population of tread wear indexes is normally distributed, construct a 95% confidence interval estimate of the population mean tread wear index for tires produced by this manufacturer under this brand name.
b. Do you think that the consumer organization should accuse the manufacturer of producing tires that do not meet the perfomance information on the sidewall of the tire?

Answer 4

well im sorry to say that i dont know how to answer this but im sure one of my friends might know, like @pooja195 , do you know how to do this?

Answer 5

okey, Thank you your suggestion I am waiting your friend I hope we will find a solution :) @tmak11 @pooja195

Answer 6

im not really sure about this maybe @perl might know :)

Answer 7

personaly i know nothing about tires but the deviation is about 192.6/200 = x/100, 1926=200x x=9.63% deviation, thats less than 10 percent which seems like a small amount to me

Answer 8

okey thank you :)

Answer 9

\(\huge\color{red}{WELCOME~TO~OPENSTUDY!!!~}\)

Answer 10

how^
you
do
that

Answer 11

thank you :)

Answer 12

LaTex. Here's the subject where you can learn how to do this: http://openstudy.com/study#/groups/LaTeX%20Practicing!%20%3A)

Answer 13

ohh
i see