Answer: C) 133
Step-by-step explanation:
The formula to find the sample size is given by :-
, where z* = Critical z-value
= Population standard deviation for prior study.
E= Margin of error.
As per given , we have
E= 5
The critical z-value for 90% confidence level is 1.645.
Substitute al;l the value sin the above formula , we get
Hence, the minimum sample size needed is 133.
Thus , the correct answer is : C) 133
Answer:
51,013.84 kilometers
Step-by-step explanation:
1 kilometer= .6214
So you have to divide 31,700 by .6214
You get 51,013.839 or round it to 51,013.84
It's the inverse operation of squaring that number. It's an odd definition to explain lol
Actually, she worked for seven hours, so I'll solve for that.
7.20 x 3 = 21.6
6.75 x 4 = 27
21.6 + 27 = 48.6
48.6 /2 = 24.3
Her average should be $24.3 If she did work six hours, just multiply 6.75 x 3 and do what I did.
Answer :
y=3/4x-6
explanation:
it is already in standard form.
