the sweater costs $15.99 regularly, however today is on sale, 1/4 off the regular price, how much is 1/4 of 15.99? well just their product, 15.99 * (1/4) = 3.9975.

that means that just for today, the sweater costs 15.99 - 3.9975.

so, today you're not really paying $15.99 for the sweater, you're paying 3.9975 less, so you're saving 3.9975. That's $3.9975 that you won't be spending on it, thus saving it.

6 0

4 years ago

Read 2 more answers

The domain of {(x, y): y = 2x² + 1 is

dangina [55]

That equation is an upward-opening parabola so the domain is (- ∞, ∞)

5 0

3 years ago

Suppose a claim is that the average pulse rates of women is μ = 73 and we wish to test this against an alternative hypothesis th

Pachacha [2.7K]

Answer:

P = 0.018

Step-by-step explanation:

In this problem, the null and alterantive hypothesis are:

$H_0: \mu=73\\H_1: \mu \ne 73$

If the sample has a size of n = 40, the degrees of freedom are 40-1 = 39.

If the value of the test statistic is t = 2.463, we can look up in a t-table to find the p-value. In this test, because the mean can be bigger than 73 or smaller than 73, we have to do a two-tailed test.

For a two-tailed test for t = 2.463 and df = 39, the P-value is P = 0.018.