A factory normally produces x units per working day. In a month with 22 working days, no units are produced in the first y worki
1 answer:
Answer:
units per day
Step-by-step explanation:
Average units produced per day = x (given)
No of days working in the month = 22
Hence total number of units to be produced = 22x
No of days not worked due to strike = y
Hence no of days available = 22-y
To reach the target of 22x units no of units to be produced per day
= total units/no of days available
=
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Answer:
a) Since the Confidence is 0.90 or 90%, the value of and
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that
b)
And the standard error is given by:
c) (1)
And the margin of error is:
And then the confidence interval is be given by:
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
represent the sample mean
population mean (variable of interest)
represent the population standard deviation
n=9 represent the sample size
Part a
Since the Confidence is 0.90 or 90%, the value of and
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that
Part b
The distribution for the sample mean is given by:
And the standard error is given by:
Part c
The confidence interval for the mean is given by the following formula:
(1)
And the margin of error is:
And then the confidence interval is be given by:
Answer:
m=1/7
Step-by-step explanation:
Labeled the points and used Slope of a line formula.
