Answer:
Runners that decrease times are not improving
Step-by-step explanation:
Answer:
Step-by-step explanation:
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Answer:
The steps 1-7 have been explained
Step-by-step explanation:
The steps are;
1) We will verify that the population standard deviations are known and that the population is normally distributed which means the sample size must be a minimum of 30.
2) We will state the null and alternative hypothesis
3) We will determine the critical values from the relevant tables
4) From the critical values gotten, we will determine it's corresponding region where it can be rejected.
5)We will calculate the value of the test statistic from the formula;
z = [(x1' - x2') - (μ1 - μ2)]/√[((σ1)²/n1) + ((σ2)²/n2)]
6) If the value of the test statistic gotten from step 5 above falls in the region of rejection noted in step 4,then we will reject the null hypothesis
7) After rejection of the null hypothesis, we will now give a decision/conclusion on the claim.
Answer:
All three are yes
Step-by-step explanation:
4. yes
5.yes
6.yes
Answer:
135 is the distance
Step-by-step explanation:
I subtracted the numbers.
I hope this helped and have a great day!
(please vote this brainliest)
