Answer: Inferential
Step-by-step explanation:
Inferential statistics, has to do with taking data from the samples that the researcher has and then making generalizations about the population through the sample gotten.
Through Inferential statistics, one can draw conclusion about a particular phenomenon. Therefore, the answer to the above question is Inferential statistics
.
Answer:
80%
Step-by-step explanation:
The percentage change is calculated from ...
percent change = ((new)/(old) -1) × 100%
= (72/40 -1) × 100%
= (1.8 -1) × 100%
= 80%
The second value is 80% greater than the first.
Answer:
0.68
Step-by-step explanation:
Given :
Mean = 67
Standard deviation = 17
Probability that X is between 50 and 84
According to the empirical rule :
1 standard deviation from the mean = 68%
2 standard deviations from the mean = 95%
3 standard deviations from the mean = 99.7%
Evaluating the number of standard deviations from the mean:
50 = 67 - 17 = 1 standard deviation
84 = 67 + 17 = 1 standard deviation
Hence ;
50 < X < 84 is 1 standard deviation from the mean which is 68%
Hence, Probability that x is between 50 and 84 is 0.68
b + 8 =13
Move 8 to the other side
Sign changes from +8 to -8
b+8-8=13-8
b=5
Answer : b=5