A leading magazine like (Barron’s) reported at one time that the average number of weeks an individual is unemployed is 28 weeks
. Assume that for the population of all unemployed individuals the population mean length of unemployment is 28 weeks and that the population standard deviation is 2.7 weeks. Suppose you would like to select a random sample of 80 unemployed individuals for a follow-up study.
1. Find the probability that a single randomly selected value is greater than 27.6.
P(X>27.6)= ________ (enter your answers as numbers accurate to 4 decimal places)
2. Find the probability that a sample of size n=80 is randomly selected with a mean greater than 27.6.
P(M>27.6)=________ (enter your answers as numbers accurate to 4 decimal places)
1. Find the probability that a single randomly selected value is greater than 27.6.
P(X>27.6)= ________ (enter your answers as numbers accurate to 4 decimal places)
2. Find the probability that a sample of size n=80 is randomly selected with a mean greater than 27.6.
P(M>27.6)=________ (enter your answers as numbers accurate to 4 decimal places)
1 answer:
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<h2>Hello!</h2>
The answer is:
The fabric will cost $4.58
D.$4.58
<h2>Why?</h2>Since it's a conversion exercise, we need to pay special attention to the conversion procedure.
From the statement we know that:
So, if she needs 10 feet of fabric, we need to convert it to meters, and then, calculate its cost.
We have that:
Now, we have that each meter of fabric cost $1.50, so, 3.05m of fabric will cost:
Hence, we have that the cost of the fabric will be $4.58.
The correct option is: D.$4.58
Have a nice day!
Answer:
B. 97%
Step-by-step explanation:
20 students is -2 standard deviations away from the mean
35 is +3 standard deviations away from the mean
100 - 2.4 = 97.6
(2.4 is amount of data we are not using)
please refer to the standard deviation graph attached :)
