Answer: 471
Step-by-step explanation:
Given : The population standard deviation is estimated to be $500.
i.e . 
If a 97 percent confidence interval is used and an interval of $100 is desired.
i.e. Margin of error = half of interval
i.e. E= 
Significance level : 1-0.97=0.03
Critical value for 97% confidence interval : 
Formula for sample size :
Hence, at-least 471 cardholders should be sampled.
Answer:
A) 7.24 hours
Step-by-step explanation:
The together rate is the sum of each separate rate.
In this problem:
Beth's rate is 1/15(suppose there was a small typing mistake there, with 151 none of the options are correct).
Mike's rate is 1/14
The together rate is 1/x
Then
We want to find x.
15*14 = 210. So
Cross multiplication
So the correct answer is:
A) 7.24 hours
B is the answer
You should get the app CY math
Answer:
<u>D.</u> <u>126</u>
Step-by-step explanation:
30 ÷ 5 = 6
5 * 6 = 30
6 * 6 = 36
10 * 6 = 60
60 + 30 + 36 = <u>126</u>
f(x) means the function of x
so the function is the input is x and the output is f(x), read "f of x". The output f(x) is sometimes given an additional name y by y = f(x). The example that comes to mind is the square root function on your calculator.
