The results of a poll show that between 75% and 83% of consumers prefer Chip A to Chip B. What is the point estimate for the per
2 answers:
Answer:
79%
Step-by-step explanation:
First of all, the point estimate is a value located in between the upper confidence limit and the lower confidence limit, it identifies a point in some parameter space.
This question provides us with an interval estimate which is a range of values used to estimate a population parameter.
Interval Estimate = 75% to 83%
75% = Lower confidence limit
83% = Upper confidence limit
Point estimate = middle value
=
= 79%
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Answer:
C.
Step-by-step explanation:
Alan and his classmates found that the line of best fit through the data had the equation
The slope of this line is
If a line would intersect this line of best fit at right angles, then the two lines are perpendicular to each other.
The slopes of perpendicular lines are negative reciprocals of each other,
Hence that line must have slope
Therefore we look for a line whose slope is from the given options.
That line is the third option