A construction company needs to remove 10 tons of dirt from a construction site. They can remove 2/5 tons of dirt each hour. How
1 answer:
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Answer:
Step-by-step explanation:
The given expression is
This is the same as;
Recall that;
This implies that;
We now use the following law of exponents
This gives us;
Answer:
The significance level is and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:
So we reject the null hypothesis is
Step-by-step explanation:
For this case we define the random variable X as the number of entry-level swimmers and we are interested about the true population mean for this variable . On specific we want to test this:
Null hypothesis:
Alternative hypothesis:
And the statistic is given by:
The significance level is and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:
So we reject the null hypothesis is