Jack is counting days in his calendar by shading the block that represents each passing day. According to Jack’s calendar, how m
1 answer:
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Answer: (30.49 years, 42.31 years)
Step-by-step explanation:
The formula to find the confidence interval is given by :-
, where = Sample mean
z* = Critical value.
= Population standard deviation.
n= Sample size.
As per given , we have
n= 40
We know that the critical value for 99% confidence interval : z* = 2.576 (By z-table)
A 99 percent confidence interval for µ, the true mean age of guests will be :
∴ a 99 percent confidence interval for µ, the true mean age of guests = (30.49 years, 42.31 years)
Answer:
The greatest rate of change is for <u>school A</u> as it has the greatest ratio of 2.5
Step-by-step explanation:
School A:
Ratio of male to female students,
School B:
Male students are related to female students by equation:
Where, means number of female students and
means number of male students.
Therefore, the ratio of male to female students is,
School C:
Ratio of male to female students is,
Now, rate of change of male to female students is directly proportional to the ratio of the two.
Hence, the greater the ratio, the greater the rate of change.
So, the greatest rate of change is for school A as it has the greatest ratio of 2.5