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PolarNik [594]
3 years ago
9

Mark can type 44 words in 2 minutes. Which of the following is equivalent to that rate?

Mathematics
1 answer:
allochka39001 [22]3 years ago
6 0

Answer:

D. 132 words in 6 minutes

Step-by-step explanation:

First, find the amount of words Mark can type in one minute:

44/2 = 22

Mark can type 22 words in 1 minute.

Next, solve by multiply each minute with words per minute to get the total words.

For choice D):

6 x 22 = 132

D) is your answer.

~

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Philip Morris wishes to determine if there is a difference between the proportion of women and proportion of men who smoke cigar
uranmaximum [27]

Answer:

Step-by-step explanation:

This is a test of 2 population proportions. Let 1 and 2 be the subscript for the women and men who smoke respectively. The population proportion of women and men who smoke would be p1 and p2 respectively.

p1 - p2 = difference in the proportion of women and men who smoke.

The null hypothesis is

H0 : p1 = p2

p1 - p2 = 0

The alternative hypothesis is

Ha : p1 > p2

p1 - p2 > 0

it is a right tailed test

Sample proportion = x/n

Where

x represents number of success(number of complaints)

n represents number of samples

For women

x1 = 14

n1 = 110

p1 = 14/110 = 0.13

For men,

x2 = 7

n2 = 95

p2 = 7/95 = 0.07

The pooled proportion, pc is

pc = (x1 + x2)/(n1 + n2)

pc = (14 + 7)/(110 + 95) = 0.1

1 - pc = 1 - 0.1 = 0.9

z = (p1 - p2)/√pc(1 - pc)(1/n1 + 1/n2)

z = (0.13 - 0.07)/√(0.1)(0.9)(1/110 + 1/95)

z = 1.47

From the options given, the test statistic is

e. none of these is correct.

Since it is a right tailed test, we will look at the area to the right of z = 1.47. The p value would be

p value = 1 - 0.9292 = 0.078

Since alpha, 0.005 < than the p value, 0.078, then we would fail to reject the null hypothesis. Therefore, the data does not indicate that the proportion of women who smoke cigarettes is higher than the proportion of men who do at α=.005

8 0
2 years ago
How do you solve powers of powers in advanced algebra
Anna35 [415]
Ex: 2^2^2

Basically, the base is multiplied by the first power however large the number. Then the new base is multiplied by the second power to get an even larger number.
Say you have a question that asks for the power of the power of 2. Or 2^2^2.

You would do the equation 2^2 first, and end up with 4. But since you have another power, you would have the answer as 4^2. Which would then equal 16. But another equation that is similar is: 2^2^2 = 2^4
The two equations would still get the same answer, but would look entirely different.
7 0
3 years ago
Find the rate in the following problem.
Serjik [45]
Answer is 39.62% 84 is 39.62% of 212. Let's find 39.62% of 212 212 x 39.62% 212 x 39.62/100 83.9944 Which is approximately equal to 84 So the answer is 39.62%
7 0
3 years ago
Oz= 1 c please help with this question
MaRussiya [10]
The answer is 8

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alisa202
8 0
3 years ago
Equation Practice with vertical angles <br><br><br>Please solve for x
Harrizon [31]

Answer:

x=20

Step-by-step explanation:

These angles are vertical angles so they are equal.

7x-99 = 2x+1

Subtract 2x from each side

7x-2x -99 = 2x-2x+1

5x -99 =1

Add 99 to each side

5x-99+99 = 1+99

5x = 100

Divide each side by 5

5x/5 =100/5

x = 20

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3 years ago
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