Answer:
(351.04, 368.96)
Step-by-step explanation:
Given that population mean= 360
Std devitaion = 4
margin of error = 2.5%= 0.025
Since population std deviation is known we can use Z critical value
For two tailed critical value for 2.5% would be
2.24
Margin of error = ±Critical value*std deviation
= ±2.24(4)
= ±8.96
Confidence interval =(Mean - margin of error, mean + margin of error)
=
Answer:
None of the above answers
Step-by-step explanation:
Form a table as shown
Months Teddy Bears Rabbits Cats Horses Others Totals toys
September 225 275 245 260 199 1204
October 346 308 186 297 285 1422
Trends
Cats decreased from 245 to 186
Others increased from 199 to 285,
285-199 = 86
percent increase was = increase/original quantity *100
86/199 *100 =43.22%
Total number of stuffed toys increased from 1204 to 1422
percent increase = (1422-1204)/1204 *100 = 218/1204 *100 =18.11%
I think it would be a also but im not good at math
Answer: 1,000
First, you have to find how much 7.5% is coming out of 10,000. So in this case it's 750. Multiply 750 by 12 years. Thats 9000, you then subtract 9000 and 10,000 to get 1,000.
Answer:
7
Step-by-step explanation:
g^2 =81
so, g=9
g-2=9-2=7
