Answer:
In a sample of 1000 test the expected number of false negatives is 8.6.
Step-by-step explanation:
The table provided is:
Positive Negative TOTAL
Hepatitis C 335 10 345
No Hepatitis C 2 1153 1155
TOTAL 337 1163 1500
A false negative test result implies that, the person's test result for Hepatitis C was negative but actually he/she had Hepatitis C.
Compute the probability of false negative as follows:
Compute the expected number of false negatives in a sample is <em>n</em> = 1000 tests as follows:
E (False negative) = <em>n</em> × P (Negative|No Hepatitis C)
Thus, in a sample of 1000 test the expected number of false negatives is 8.6.
I'm guessing you're saying 213 + 234 ? if so the answer is 447 boxes of muffins. If thats not what you're asking then please explain, if it is i hope this helped! (:
Complete question :
The Daily Info charges a fee $650 of plus $80 per week to run an ad. The People's Paper charges $145 per week. Write an inequality to represent the number of weeks an ad must run for the total cost at the Daily Info to be less expensive than the cost at the People's Paper. Let w be the number of weeks the ad runs in the paper
Answer:
650 + 80w < 145w
Step-by-step explanation:
Given that :
Number of weeks ad will run = w
Daily Info total cost :
650 + 80w
The People's Paper total cost:
145w
Number of weeks ad should run For cost at daily info to be less expensive than peoples choice';
Daily Info total cost < people's choice
650 + 80w < 145w
650 < 145w - 80w
650 < 65w
650/65 < 65w / 65
10 < w
w > 10
First we want to find how much an individual biscuit costs.
If 5 biscuits costs 30p, then
5 x 1 biscuit = 30p
divide both sides by 5
1 biscuit = 6p
If one biscuit costs 6p, and we want to know how much 7 biscuits cost, then:
7 x 6p =42p
7 biscuits costs 42 p
Answer:
If you add the answer is 27 but if you multiply the answer is 720.
Step-by-step explanation:
Hope this helps.
