2. to estimate the mean age for a population of 4000 employees, a simple random sample of 40 employees is selected. a. would you use the finite population correction factor in calculating the standard error of the mean? explain. b. if the population standard deviation is σ = 8.2 years, compute the standard error both with and without the finite population correction factor. c. what is the probability that the sample mean age of the employees will be within ±2 years of the population mean age?

answer: $13,622.84

step-by-step explanation: check the picture for info and stats : )

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.

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