Answer: x=- 17 / 8
Step-by-step explanation:
1
0
(
+
1
)
=
2
−
7
{\color{#c92786}{10(x+1)}}=2x-7
10(x+1)=2x−7
1
0
+
1
0
=
2
−
7
{\color{#c92786}{10x+10}}=2x-7
10x+10=2x−7
2
Subtract
1
0
10
10
from both sides of the equation
3
Simplify
4
Subtract
2
2x
2x
from both sides of the equation
5
Simplify
If ages are normally distributed then using a significance level of 0.05 , we can claim that the population mean is greater than 24.
Given sample mean of 25 years , sample size of 16 ,standard deviation of 2 years.
We have to find whether the population average is greater than 24.
We have to use t test because n is less than 30. It is right tailed.
We have to first form Hypothesis.
:μ>24,
:μ<24.
t=X-μ/S/
t critical at 5% significance level and degree of freedom=15 (16-1)=1.7531
t=24-25/2/
=-1/0.5
=-2
Because 1.7531 is greater than -2 so we will accept the null hypothesis.
Hence we can say that the average of population is greater than 24.
Learn more about t test at brainly.com/question/6589776
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three hundred thousand twenty-one two hundred nine
Answer:
positive 48 ..yan yung pagkakaalam ko
Answer:
6 and 20
Step-by-step explanation:
20-7=13