Answer:
5 1/2 is also known as 11/2 and 3 3/4 is also know as 15/4. Now times 11/2 x 15/4. 165/8 is the answer i think
Step-by-step explanation:
you make everything an improper fraction then times it
Answer: 74.5% of the measurements fall within one standard deviation of the average.
Step-by-step explanation:
The total number of measurements given is 2 + 12 + 10 + 33 + 40 + 76 + 80 + 65 + 52 + 22 + 12 + 5 + 11 = 420
If the mean is 21 mm and one standard deviation is 0.23 mm, then one standard deviation from the mean would be
21 ± 0.23
The lower limit is 20.77 mm
The upper limit is 21 + 0.23 = 21.23 mm
The number of measurements that fall within this range are
20.8 × 40
20.9 × 76
21.0 × 80
21.1 × 65
21.2 × 52
The total number of measurements that fall within this range is
40 + 76 + 80 + 65 + 52 = 313
The percentage of the measurements that fall within one standard deviation of the average is
313/420 × 100 = 74.5%
Answer:
B 10.211 < 10.210
Step-by-step explanation:
Evaluating each of the given statements one by one:
A 10.345 > 10.340
Decimal values at the tenth and hundredth place are the same on both sides while the thousandth part value is greater on the left side.
Hence, this statement is true
B 10.211 < 10.210
Decimal values at the tenth and hundredth place are the same on both sides while the thousandth part value is greater on the left side.
Hence , this statement is not true because 10.211>10.210
C 9.999 < 10.0
This statement is true because 9.999 is less than 10.
D 6.3 = 6.30
This statement is correct as the left hand side is the same as right hand side.
Answer:
Null Hypothesis: H0:μ ≤ 16.8
Alternative Hypothesis: Ha: μ > 16.8
Step-by-step explanation:
We are told that affer testing the hypothesis (at the 5% level of significance), that the average price-earnings ratio increased from the past value of 16.8.
It means that the past value was not more than 16.8.
This follows that the null hypothesis is given as;
H0:μ ≤ 16.8
And since it has been discovered that the ratio increased from the past value of 16.8, the alternative hypothesis is;
Ha: μ > 16.8
Answer:
5
Step-by-step explanation:
4x5=20
