Answer: 95% confidence interval would be (1341.2,1458.8).
Step-by-step explanation:
Since we have given that
n = 64
Average = 1400
Standard deviation = 240
We need to find the 95% confidence interval for SAT scores.
So, z = 1.96
So, Interval would be
Hence, 95% confidence interval would be (1341.2,1458.8).
The current price of the item is $2500 and the price 10 years from today is $3665. 2.
Given exponential function
p(t) = 2500 × (1.039)^t
where t is the number of years from today.
Rate of inflation is 3.9% per year
The computation of the current price of the item and the price 10 years from today is shown below:-
p(t) = 2500 × (1.039)^t
Now, the current price can be found by putting t = 0
p(0) is
p(0) =
= 2500
The price 10 years from today can be found by putting t = 10
p(10) is
p(10) =
= 2500 × 1.466
= 3,665.181
Rounding to nearest dollar
= $3665. 2
The current price of the item is $2500 and the price 10 years from today is $3665. 2.
Find out more information about current price here
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Answer:
Option C
Step-by-step explanation:
We want to know the percentage of women among people who only prefer exercise.
We have the following information:
Diet Only Exercise Only Diet and Exercise
Men 7 28 15
Women 22 18 10
Then we get the total of people who prefer just exercise.
Now the proportion of women who only prefer exercise is calculated as:
Therefore we must search among the options the table that shows a proportion of 39 for women who prefer only the exercise.
This table is in option C.
C.
Diet Only Exercise Only Diet and Exercise
Men 0.24 0.61 0.60
Women 0.76 0.39 0.40