Need help pleaseeee!!!!!!!
2 answers:
For this case, we must indicate what was the final cost of the items since the TV has a 20% discount. So, we make a rule of three to determine the discount amount.
545 ---------------> 100%
x -------------------> 20%
Where "x" represents the amount given by the 20% discount.
So, on TV you save $ 109.
Payment for TV $ 436
Then the total cost of the two items, excluding taxes, was:
Answer:
$ 625
You might be interested in
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