Answer: c. z = 1.35; Reject the null hypothesis
Step-by-step explanation:
Let 
be the average life expectancy of its batteries.
As per given , we have
Null hypothesis : 
Alternative hypothesis : 
Since 
is right-tailed and population standard deviation is also known, so we perform right-tailed z-test.
Test statistic : 
where, n= sample size
= sample mean
= Population mean
=population standard deviation
For 
, we have
Critical one-tailed test value for 0.10 significance level :
Decision : Since critical z value (1.28) < test statistic (1.35), so we reject the null hypothesis .
[When critical value is less than the test statistic value , we reject the null hypothesis .]
Answer:
y ≈ 2.5
Step-by-step explanation:
Using the Sine rule in Δ XYZ
= 
, substitute values
= 
( cross- multiply )
y sin50° = 2 sin75° ( divide both sides by sin50° )
y = 
≈ 2.5 ( to the nearest tenth )
True. If you're just changing the form, yes. But remember when you change one side of an equation, you must change the other in the same way.
You would be able to get 9 bags of grapes.
2 * 9 = 18
Hope this helps!
notice, Papa Bear is 18inches in diameter, but radius is half that
and "edge per dollar" simply means, how much circumference per dollar
or
