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saul85 [17]
2 years ago
7

did americans work less than 40 hours a week on average in 1984? in 1984, the gss included questions about the number of hours t

hat the respondent worked per week. the average number of hours worked per week was 36.63 hours with a standard deviation of 13.23 hours. a sample of 34 respondents was questioned. find the test statistic.
Mathematics
1 answer:
Aliun [14]2 years ago
5 0

Answer:

878 gas

Step-by-step explanation:

89=5=7=9

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How much money do winners go home with from the television show Jeopardy? To determine an answer, a random sample of winners was
defon

Answer:

Step-by-step explanation:

well it would be about if it got random winners it would be 24759

hope this helps

6 0
3 years ago
Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre
wlad13 [49]

Answer: No, Cammie is not correct. She can mow  1\frac{1}{5}\ acres in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow \frac{1}{2}\ acre in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

\frac{\frac{1}{2}}{25}=\frac{x}{60}

Solving for "x", you get:

\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

x=1\frac{1}{5}

Therefore, she can mow  1\frac{1}{5}\ acres in one hour.

5 0
3 years ago
Molly and Torry like to eat ice cream sandwiches. In one week, Molly ate 555 ice cream sandwiches, and Torry ate nnn ice cream s
Svetradugi [14.3K]

Answer:

The equation is <u>5 + n = 12</u> and Torry ate<u> 7 </u>ice cream sandwiches.

Step-by-step explanation:

Given:

Molly and Torry like to eat ice cream sandwiches. In one week, Molly ate 5 ice cream sandwiches, and Torry ate n ice cream sandwiches. They ate a total of 12 ice cream sandwiches all together.

Now, to write an equation to describe this situation and to find number of ice cream sandwiches Torry eat.

Molly ate = 5 ice cream sandwiches.

Torry ate = n ice cream sandwiches.

Total ice cream sandwiches = 12.

So, to write an equation of this situation:

5+n=12

Now, to find the number of ice cream Torry ate:

5+n=12

<em>Subtracting both sides by 5 we get:</em>

n=7.

<em><u>Torry ate = 7 ice cream sandwiches</u></em>.

Therefore, the equation is 5 + n = 12 and Torry ate 7 ice cream sandwiches.

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