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soldi70 [24.7K]
3 years ago
14

Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if c

ollege students are different from the adult population. Julie tabulated that her sample of 101 students got an average of 7.1 hours of sleep each night, with a standard deviation of 2.48. Using the data provided and the formula below, what is the t-statistic that Julie calculates
Mathematics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

-3.64

Step-by-step explanation:

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the number is 57,733 contains two sets of digits in which one digit is ten times as great as the other. what are the values of t
Afina-wow [57]
In 57,733 the values are:

5 is for tens
The first 7 is for ones
The second 7 is for tenths
The first 3 is for hundredths
The second 3 is for thousandths

Two set of digit in which one digit is ten times as great as the other are 3 and 3, as well as 7 and 7

It's because 0,03 is ten times as much as 0,003 and 7 is ten times as much as 0,7.
8 0
3 years ago
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Write the following fractions in word. 3/4, 1/5, 3/4, 1 3/5.. please help me​
Alik [6]

Answer:

"In word" as in word form?

3/4 = three fourths

1/5 = one fifth

3/4 = three fourths (again?)

1 3/5 = one and three fifths

4 0
2 years ago
please help 30 points !! in a proportional relationship when Y=2 when X=8 Which of the following equations would describe this r
Alex777 [14]

Answer:

(1)

Step-by-step explanation:

We will try:

(1) y = \frac{1}{4}x => 2 = 2 (seems legit)

(2) y = 4x => 2 = 32 (nope)

(3) y = x - 6 => 2 = 2 (yes but actually no because it is proportional relationship)

(4) y = \frac{1}{2}x - 2 => 2 = 2 (like the above)

8 0
3 years ago
100%− 10/ 9 ​ =<br> hhhhhheeeeeeeeellllllllllllllpppppppppppppp
Umnica [9.8K]
= -1/9 im pretty sure is the answer
5 0
3 years ago
Read 2 more answers
Doug sold 125 sandwiches to raise money for his boy scout troop. 80% of those sandwiches were sold in his neighborhood. How many
grigory [225]

Answer:

Doug sold 100 sandwiches in his neighborhood.

Step-by-step explanation:

To solve for percentage you have to first find the percentage's decimal. To find this you have to the move the decimal point up to places. This makes 80 into 0.8. After you do this you will mutiply that but the total amount. So 125 times 0.8. Once you do this you should get 100. This means that Doug sold 100 sandwiches in his neighborhood.

4 0
3 years ago
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