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aleksklad [387]
4 years ago
5

g Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assum

e that the population standard deviations are equal. Refer to the accompanying data set. Use a 0.01 significance level to test the claim that women and men have the same mean diastolic blood pressure. LOADING... Click the icon to view the data for diastolic blood pressure for men and women. Let mu1 be the mean diastolic blood pressure for women and let mu2 be the mean diastolic blood pressure for men. What are the null and alternative​ hypotheses? A. H0​: mu1not equalsmu2 H1​: mu1equalsmu2 B. H0​: mu1less thanmu2 H1​: mu1equalsmu2 C. H0​: mu1equalsmu2 H1​: mu1not equalsmu2 D. H0​: mu1equalsmu2 H1​: mu1greater thanmu2
Mathematics
1 answer:
kondor19780726 [428]4 years ago
4 0

Answer:hey

Step-by-step explanation:

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The perimeter of a rectangle is 42 feet. The length decreased by three times the width is 1 foot. What are the dimensions of the
madreJ [45]
First you want to make an equation to express the problem. For this one in particular, let's make the length be represented by "L" and the width "W."

The length minus three times the width is 1 foot. This can be represented as L - 3W = 1. This means that L = 3W + 1. This will be our substitute for the length.

The perimeter of a rectangle is 2 times the length plus the width P = 2(L + W). By substituting these variables from what we now know we can find out the dimensions of the rectangle.

42 = 2(3W + 1 + W)
42 = 6W + 2 + 2W     Multiply <u>everything in parenthesis</u> by 2.
42 = 8W + 2              Add the like terms.
40 = 8W                    Subtract 2 on both sides to get the <em>variable (W) </em>by itself.
5 = W                        Divide 8 from 40 to get what W equals.

The width is equal to 5. We can now plug in this answer to the original equation (P = 2(L + W)) or the length equation we made earlier (L = 3W + 1) to find the length.

42 = 2(L + 5)
42 = 2L + 10     Multiply <u>everything in parenthesis<em /></u><u><em /></u> by 2.<u />
32 = 2L             Subtract 10 from both sides to get the <em>variable (L) </em>by itself.
16 = L               Divide 2 from 32 to get what L equals.
<u>Or</u><u />
L = 3(5) + 1      Replace the <em>variable (W) </em>with 5.
L = 15 + 1        Multiply 3 by 5 to get 15.
L = 16              Add the remaining terms!

So the dimensions of the rectangle are 5 and 16, where 5 is the width and 16 is the length. I hope this answer made sense and that you can solve these on your own in the future!
4 0
4 years ago
Yesterday, the temperature at noon was 10.4°F. By midnight, the temperature has decreased by 16.7 degrees. What was the temperat
tresset_1 [31]

Answer:

-6.3 degrees

Step-by-step explanation:

First I formed the equation 10.4-16.7=x, which the answer came to be -6.3 degrees.

6 0
3 years ago
Express your answer in the smallest unit: 338km+ 62km 71m
Alexeev081 [22]
Adding all of the together would be 471... but I need clarification on the problem
8 0
3 years ago
5. A softball has a diameter of 8.3 in. How many softballs will fit inside of a storage unit 4 that is 15 feet wide, 10 feet lon
Westkost [7]

Answer:

4329 softballs

Step-by-step explanation:

To find the number of softballs that will fit into the container, we first find the volume of the softball. Since it is a sphere, its volume V = 4πr³/3 where r = radius = d/2 where d = diameter of softball.

So, V = 4π(d/2)³/3 = πd³/6

Since d = 8.3 in,

V =  πd³/6 =  π(8.3 in)³/6 = π × 571.787 in³/6 = 299.39 in³

The volume of the box, V' = 15 × 10 × 5 ft³ = 750 ft³ = 750 × (12 in)³ = 750 × 1,728 in³ = 1,296,000

So, for n softball to fit, its volume must equal the volume of the storage unit.

The volume of n softballs is nV.

For the softballs to fit, V' = nV

n = V'/V

= 1,296,000 in³/299.39 in³

= 4328.8 softballs

≅ 4329 softballs since we cannot have a decimal number of softballs.

7 0
3 years ago
The antiderivative of<br><img src="https://tex.z-dn.net/?f=33%20%5Csqrt%7By%7D%20dy" id="TexFormula1" title="33 \sqrt{y} dy" alt
ozzi
Sqrt y = y^1/2

antiderivative = 33 * y^(1/2 + 1)  / (1/2 + 1)  = 33 * y^(3/2)  / 3/2

= 33 * 2/3 * y^(3/2)

 = 22 y^(3/2)  answer
6 0
3 years ago
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