11/15-2/5
Multiply 2 and 5 to get a common denominator of 15
11/15-6/15
=4/15
Answer:
Interval is given with 97% confidence. Thus there is 3% probability that interval is not true.
Step-by-step explanation:
In Statistics, estimated intervals are given with some confidence level. In this example person develop the interval with 97% confidence.
<em>Statistically</em>, this means that the person can be 97% sure (not 100%) that population mean is 74.3 < µ < 78.3. There is still 3% probability that population mean falls outside of the interval.
Small sample size may also lead wrong estimates.
Supplementary angles add up to 180 degrees. to find one just subtract.
180- 42= 138
Answer: 1:6
Step-by-step explanation:
12 months make 1 year
3 years= 3 × 12 = 36 months
6 months : 36 months
6/36 = 1/6
= 1:6
Answer:
last one: sqrt(5)
Step-by-step explanation:
Length of AB
Sqrt[(4-0)²+(4-2)²]
sqrt(16+4)
sqrt(20)
2sqrt(5)
Length of A'B': ½ × length AB
½ × 2sqrt(5)
sqrt(5)