Which relationships could have a negative correlation? Select three options. number of hours worked and free time speed of a car
2 answers:
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Answer:
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.
In this question:
The narrower C.I. is the 95%, and the wider is the 99%. So
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
<h3>Question:-</h3>
- Combine like terms. 5y - 8 - y
- here like terms are 5y,-y
- solving like terms
- 5y-y-8(subtracting 5y-y)
- 4y-8
hence the combination=
All the best !