Answer:
Third option is the correct answer
Step-by-step explanation:
Given functions are:
To find:
The function which has a range ?
Solution:
First of all, let us learn about the terms Domain and Range for a function:
Domain is the value of which is given as input to the function and gives a valid value of output as (i.e. function is defined).
Range of a function is the value that comes as output when given a valid value of as input.
Now, let us consider the given options above.
Third option is the correct answer.
As we can see, is subtracted from 3 so will have a value which is lesser than 3.
i.e. range will be .
No other function has such condition present in it.
is the correct answer.
Answer:
I need points meh
Step-by-step explanation:
25% because even tho its bigger doesnt mean its gonna be correct i am sorry if its wrong not a math person
Answer:
-2
Step-by-step explanation:
x = the number
difference refers to subtraction
(8*x) - 3 = -19
8x - 3 = -19
+ 3 + 3
8x = -16
/ 8 /8
x = -2
Hope that helps!
Answer:
100 students should be surveyed in order to cut the width of the interval down from 3 hours to 1.5 hours
Step-by-step explanation:
Given that a 95% confidence interval, based upon a sample of size 25, for the mean number of hours of sleep that college students get per night was 5 to 8 hours.
Confidence interval = (5,8)
This implies that mean = 6.5 and margin of error = 1.5
i.e.
If the interval width to be cut into half then the
New confidence interval = (5.75, 7.25)
Margin of error = 0.75
This is possible only when new n= 100
Hence sample size should be increased to 100
100 students should be surveyed in order to cut the width of the interval down from 3 hours to 1.5 hours