The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.2 minutes, and the standard deviation is 3.4 minutes.Requried: a. What is the probabilty that a random sample of n = 40 oil changes results in a sample mean time less than 15 minutes? b. Suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. On a typical Saturday, the oil-change facility will perform 40 oil changes between 10 A.M. and 12 P.M. Treating this as a random sample, there would be a 10% chance of the mean oil-change time being at or below what value? This will be the goal established by the manager.
(a) Probability that a random sample of n = 45 oil changes results in a sample mean time < 10 minutes i=0.0001.
(b) The mean oil-change time is 15.55 minutes.
Let us denote the sample mean time as x
From the Then x = mean time = 16.2 minutes
The given standard deviation = 3.4 minutes
The value of n sample size = 45
CHECK THE ATTACHMENT FOR DETAILED EXPLANATION
Anita has 2 quarters, 1 nickel, and 4 pennies. Write Anita’s total amount as a fraction of a dollar.
Veronique tried four different solutions to the matching problem shown. Which of her four answers would be thecorrect one? Term variable Definition a numerical factor of a term that has a variable a letter or symbol used to represent an unknown quantity a term without a variable coefficient constant Definition Term a numerical factor of a term that has a variable variable coefficient a letter or symbol used to represent an unknown quantity a term without a variable constant
the correct ansewer is C
i took the unit test on edge the other guy is wrong
A men and a women decided to meet at a certain location. If each of them independently arrives at a time uniformly between 12pm and 1pm, find the probability that the first to arrive has to wait longer than 10 mins?
the probability that the first to arrive has to wait longer than 10 mins is 35/36.
First you need to denote by X and Y the time past 12 noon that the man and woman arrive.
Then you have to compute P(X+10<Y)+P(Y+10<X), which by symmetry equals 2P(X+10<Y).
So basically you have to compute P(X+10<Y).
check the attachment for the rest of the step by step.
Answer should be 25/72
But since we want 2× of the above probability 2× 25/72 = 25/36finalanswer.
Answer this fast and I’ll make you Brainly!!
8.5 or 4.25 i think pretty sure its 8.5 tho
Acting alone, it takes two killer whales 2 minutes to catch two seals. Based upon this rate, how long will it take a pod of ten killer whales to catch ten seals?