Answer:
We accept the null hypothesis that the breaking strength mean is less and equal to 1750 pounds and has not increased.
Step-by-step explanation:
The null and alternative hypotheses are stated as
H0: u ≥ 1750 i.e the mean is less and equal to 1750
against the claim
Ha: u > 1750 ( one tailed test) the mean is greater than 1750
Sample mean = x`= 1754
Population mean = u = 1750
Population deviation= σ = 65 pounds
Sample size= n = 100
Applying the Z test
z= x`- u / σ/ √n
z= 1754- 1750 / 65/ √100
z= 4/6.5
z= 0.6154
The significance level alpha = 0.1
The z - value at 0.1 for one tailed test is ± 1.28
The critical value is z > z∝.
so
0.6154 is < 1.28
We accept the null hypothesis that the breaking strength mean is less and equal to 1750 pounds and has not increased.
Answer:
x < -8
Step-by-step explanation:
Answer:
34091 dollars per person
Step-by-step explanation:
In order to answer the question, you have to divide the amount of debt by the amount of population to obtain the amount of dollars per person.
The debt was $10.5 trillion. A trillion is a thousand billion (1000 multiplied by a billion which is 
in scientific notation)
1000=
One trillion is 
The debt is: $ 10.5 x 
The population is scientific notation is: 308.0 x 
Dividing the amount of debt by the amount of population:
Simplifying and expressing it in standard notation:
34090.9 dollars per person
Rounding to the nearest dollar:
34091 dollars per person.
A natural number is a single digit whole number, a whole number is any number without a decimal or fraction including zero, an integer is any whole number and their opposites, a rational number is any number that can written as a fraction of two integers(a/b where b can't equal 0), and an irrational number is a number that cannot be expressed in a fraction of two integers. So terminating decimals are rational while repeating decimals are irrational.
