Answer:
Owens Industries is trying to increase its profile in the community. As part of this effort, Owens sponsors a Little League base
1 answer:
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If you <em>deposit</em> $35, you can imagine drawing a green line (representing the money gained) to the 35 on the number line, which can be seen as <em>moving </em>35 to the right<em />. Fo <em>w</em><em>ithdrawing, </em>imagine drawing a red line back 50 notches on the number line (representing money lost). The net effect that the deposit and withdrawal will have on your account balance is a 
dollar <em>loss</em>, which can be represented on the number line as a line drawn to the point -15.
Answer:
The average hold time is 10.47 minutes.
Step-by-step explanation:
Let <em>X</em> = time the customers of a phone-in technical support business spend on hold.
The population mean of the random variable <em>X</em> is, <em>μ</em> = 11 minutes.
The population standard deviation of the random variable <em>X</em> is, <em>σ </em>= 1.16 minutes.
A random sample size, <em>n</em> = 62 callers are selected.
According to the Central limit theorem if large samples (<em>n</em> > 30) are selected from an unknown population with mean <em>μ</em> and standard deviation <em>σ</em> then the sampling distribution of sample mean () follows a Normal distribution.
The mean of the sampling distribution of sample mean is:
The standard deviation of the sampling distribution of sample mean is:
It is provided that .
Compute the value of <em>a</em> as follows:
The value of <em>z</em> for the above probability is, <em>z</em> = -0.806.
The value of <em>a</em> is:
Thus, the average hold time is 10.47 minutes.