Charles is saving $5 each week.He earns an extra $15 by mowing his neighbor's lawn.Write the inequality to show how to find how
1 answer:
Answer:
Minimum number of weeks = 4
Step-by-step explanation:
Charles earns $5 each week .Also he makes $15 each week by mowing his neighbours lawn.
Thus , in total , he earns a total of $20 each week.
We have to find the minimum number of weeks needed to make $75 .
Number of weeks required =
=
=3.75
Since the number of weeks, W, is an integer, choose the next highest integer.
Hence the minimum number of weeks required = 4
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Answer: The population proportion is between 0.34 and 0.46 .
Step-by-step explanation:
Interpretation of 95% confidence interval : A person can be about 95% confident that the true population parameter lies in the interval.
A confidence interval is constructed for an unknown population proportion, p. A sample is collected, and the 95% confidence interval is calculated to be 0.40 ± 0.06.
i.e. Lower limit =
Upper limit =
i.e. 95% confidence interval = (0.34, 0.46)
i.e. A person can be about 95% confident that the true population proportion (p) lies in the interval (0.34, 0.46).
⇒ It is most accurate to say that there is approximately 95% confidence in the assertion that:
The population proportion is between 0.34 and 0.46 .