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2 years ago

ppl plz answer my question with the three picks of table of values i really need it to boost my grade up plzzzzzz

Mathematics

1 answer:

hjlf2 years ago

7 0

Wheres the question lol..

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Convert 336 hours to seconds

Rainbow [258]

Answer:

336 Hours = 1,209,600 Seconds = 1209600 Seconds\

Step-by-step explanation:

This conversion of 336 hours to seconds has been calculated by multiplying 336 hours by 3,600 and the result is 1,209,600 seconds.

8 0

3 years ago

Read 2 more answers

28 6500 as a decimal

algol [13]

Answer:

.0043076923076923

Step-by-step explanation:

7 0

2 years ago

78% of the class completed their homework last night. What fraction of the class completed their homework?

mixas84 [53]

Answer:

$\frac{39}{50}$

Step-by-step explanation:

=> 78% makes:

=> $\frac{78}{100}$

In simplest form:

=> $\frac{39}{50}$

3 0

3 years ago

Read 2 more answers

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol

Julli [10]

Answer:

$0.071,1.928$

Step-by-step explanation:

Downtown Store North Mall Store

Sample size n 25 20

Sample mean $\bar{x}$ $9 $8

Sample standard deviation s $2 $1

$n_1=25\\n_2=20$

$\bar{x_1}=9\\ \bar{x_2}=8$

$s_1=2\\s_2=1$

$x_1-x_2=9-8=1$

Standard error of difference of means = $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

Standard error of difference of means = $\sqrt{\frac{2^2}{25}+\frac{1^2}{20}}$

Standard error of difference of means = $0.458$

Degree of freedom = $\frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}$

Degree of freedom = $\frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}$

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = $(x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)$

Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

4 0

2 years ago

Write the following equation in the general form Ax + By + C = 0. 1/2 y - x - 1 = 0

murzikaleks [220]

Hope it will help you..

4 0

3 years ago