Answer:
Step-by-step explanation:
Given that a researcher is planning to construct a one-sample z ‑confidence interval for a population mean
The confidence interval would be calculated as
Here margin of error = Z critical * std error determines the size of the confidence interval
Margin of error dependds on i) Z critical value ii) std deviation
iii) Inversely to square root of sample size.
Hence margin of error would be small if
.B) The researcher increases the sample size
C) The researcher lowers the confidence level
E) The population standard deviation turns out to be lower than expected.
Answer:
The data consisting of the classifications A, B, C, and D are qualitative.
After the data are input as 1, 2, 3, or 4 the data still be qualitative.
Step-by-step explanation:
The data consisting of the classifications A, B, C, and D are qualitative because data is categorized in A B C and D categories.
When the data are input as 1,2,3 or 4 it would be still be qualitative because here 1,2,3 or 4 as used as identifier rather than actual numerical meaningful digits.
Answer:
Step-by-step explanation:
We are given the following in the question:
Flat fee = 6 dollars
Charges per hour = 10 dollars per hour
Let Steve work for h hours.
Then, we can write the total charge in the following manner:
Total charge =
Putting values, we get,
is the required equation for total charges if Steve worked for h hours.
Answer:
Step-by-step explanation:
Longest side of ∆ = 2a = 6.2 cm
If the shortest side is, a, and we are told that the longest side is twice the shortest side, therefore, length of shortest side is
The sum of the 3 sides = perimeter = 14.5 cm
Thus,
Plug in the values of a and b
The equation that can be used to find the side lengths is
Answer:
Marcy
Step-by-step explanation:
