A fruit company delivers its fruit in two types of boxes: large and small. A delivery of2 large boxes and 12 small boxes has a t
1 answer:
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Answer:
Step-by-step explanation:
Information given
represent the sample mean for the sample
population mean (variable of interest)
s=4.9 represent the sample standard deviation
n=8 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
the degrees of freedom are given by:
Since the Confidence is 0.95 or 95%, the value of and
, and the critical value for this cae would be
Now we have everything in order to replace into formula (1):
Given:
The inequality is
To find:
The solution of the given inequality on the number line.
Solution:
We have,
Subtract 5.25 from both sides.
Multiply both sides by -1 and change the sign of inequality.
The value of b always less than or equal to -1.25. Since -1.25 included in the solution set, therefore there is a solid circle on -1.25.
-1.25 lies between -2 and -1. It means the solid circle lies between -1 and -2.
, so the number line is shaded from the circle to negative 5.
A number line going from negative 5 to positive 5 is the required solution if a solid circle appears between negative 1 and negative 2. The number line is shaded from the circle to negative 5.
Therefore, the correct option is A.