The correct option is : 2
<u><em>Explanation</em></u>
For finding the mean number of working TV sets, we need to <u>divide the total number of TV sets by the total frequency</u>.
Now for finding the total number of TV sets, first we will <u>multiply each number of TV sets by it's frequency and then sum up all the results</u>.
So, the total number of TV sets
and total frequency 
Thus, the mean number of working TV sets 
Answer:8
Step-by-step explanation:
9 times 8 is 72
Price of the sweatshirt = $34
First discount = 20% x $34 = 0.1 x 34 = $6.80
Price after discount = $34 - $3.40 = $27.20
Additional discount = 10% x $27.20 = $2.72
Price after additional discount = $27.20 - $2.72 = $24.48
Answer: FInal sale price = $24.48
Answer:
An appliance manufacturer gives a warranty, and 95 percent of its appliances do not require repair before the warranty expires. An organization buys 10 of these appliances. Calculate an interval that contains 95.44 percent of all the appliances that will not require repair.
A. [8.12, 10.88]
B. [7.43, 11.57]
C. [8.81, 10.19]
D. [8.55, 10.45]
Step-by-step explanation:
We can calculate the confidence interval for a proportion p = 0.95 and a sample size n = 10.
Note that the critical value for 95.44% confidence is 1.9991. Z-score table.
Between 81.22% and 108.78% of 10 units is 8.12 and 10.88 units. Therefore the confidence interval is: (8.12, 10.88).
Answer: [ 8.12 , 10.88 ]
1. What is the ratio of guppies to 12 ciclids.
<span>, the ratio is 7:12. </span>
<span>2).4;2=2;1</span>
<span>3. Since there are 9 corydoras catfishes, you put as 9:?.You count the total of fishes including corydoras catfishes which are 34 fishes. The answer is. 9:34
hope it helps
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