Answer:
Step-by-step explanation:
The average weight of a package of rolled oats is supposed to be at least 18 ounces
Null hypothesis: u >= 18
Alternative: u < 18
Using the t-test formula, we have
t = x-u/ (sd/√n)
Where x is 17.78, u = 18, sd = 0.41 and n = 18
t = 17.78-18 / (0.41/√18)
t = -0.22 / (0.41/4.2426)
t = -0.22/ 0.0966
t = -2.277
Since, this is a left tailed test, at a significance level of 0.05, the p value is 0.01139. Since the p value is less than 0.05, we will reject the null hypothesis and conclusion that the true mean smaller than the actual specification.
You first divide 30 by 4 to see how long it takes him to run one mile. Then you get 30/4 which simplified is 15/2 minutes
Answer:
C is the most reasonable answer because to add the system of equations together, you must make sure that one of the terms (whether it be the x or y value) can cancel out.
Step-by-step explanation:
Hello!
Solve for y.
Explanation:
↓↓↓↓↓↓↓↓↓↓↓↓↓
First you had to add by -2x from both sides of the equation.
Then divide by 4 from both sides of the equation.
Simplify it should be the correct answer.
Answer⇒⇒⇒⇒⇒⇒y=-1/2x+3
Hope this helps!
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-Charlie
Answer:
9 miles
Step-by-step explanation:
yes i used a calculator
