basically i need help trying to learn .. um ... i ... so basically what i’m asking is how.. why.... uh .. sorry i .. so overall
1 answer:
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Answer:
They can either decrease the confidence level or increase the sample size, that is, survey more students.
Step-by-step explanation:
The width of a confidence interval is given by:
In which z is the critical value correponding to the confidence level(higher confidence level, higher z is), is the standard deviation of the population and n is the size of the sample.
The students realize that this interval contains a large margin of error. What can they do to make a narrower interval?
Looking at the formula for M, they can either decrease the confidence level or increase the sample size, that is, survey more students.
Answer:
Step-by-step explanation:
i) z = -32
ii)
The graph of the equation given by y=-cos³θ will be as follows:
