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Natalija [7]
4 years ago
8

true or false the standard error of the sum and the standard error of the average both get smaller as the sample size increases

Mathematics
1 answer:
Murrr4er [49]4 years ago
6 0

Answer:

false

Step-by-step explanation:

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4,284 passengers traveling by the intercity bus every day, the intercity bus operates 6 hours every day, find the number of pass
Lemur [1.5K]

Answer:

714

Step-by-step explanation:

So lets go over what we know.

The bus only goes for 6 hours each day.

So lets just think of a full day as 6 hours.

Each day(6 hours), 4284 passangers ride the bus.

To find passangers per hour, we must divide the total passangers by the total hours.

This is 4284(total passangers) divided by 6(total hours):

4284/6

=

714

So each hour, there are 714 passangers.

Hope this helps!

7 0
3 years ago
Simplify |65.45-42.45|-(30.40+45.83)
alisha [4.7K]

Answer:

−

53.23

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Ashley has two jobs: mowing lawns and babysitting. She earns $9 per hour mowing lawns (x) and $7 per hour babysitting (y). She a
SpyIntel [72]

Answer:

The correct answer is 9x + 7 y \geq 147 where Ashley works for x hours as lawn mower and y hours as babysitter per week.

Step-by-step explanation:

Ashley works in two different jobs namely mowing lawns and babysitting.

Let Ashley mow lawn for x hours and babysit for y hours in a week.

Ashley's earning for every hour she mow is $ 9. Total earning mowing lawn is $ 9x.

Ashley earns $7 for every hour she babysit. Total earning babysitting is $ 7y.

Total earning per week $ (9x + 7y).

Ashley's earning per week is at least $147.

∴ The required inequality to describe the above case is 9x + 7 y \geq 147.

6 0
3 years ago
Read 2 more answers
Write an equation parallel to x - 3y = 9 that passes through the point ( 3, -1 )
ivolga24 [154]

Answer:

Step-by-step explanation:

Use the point-slope formula.

y - y_1 = m(x - x_1)   ....   x_1 = 3 and y_1 = - 1

m is the slope to  x - 3y = 9 because (lines are  parallel )

calculate : m   by equation   x - 3y = 9 :

x = 3y +9

divid by : 3      1/3 x = y + 3

y =  (1/3) x - 3      so : m = 1/3

an equation parallel to x - 3y = 9 that passes through the point ( 3, -1 ) is :

y +1 = (1/3)(x - 3)

4 0
3 years ago
SECOND TIME ASKINGAt a summertime poolside snack bar, 200 ice cream scoops were sold in one day. Double scoops were sold for $1.
Snezhnost [94]

<em>What we know: </em>

200 ice cream scoops sold in one day

$1 for Single scoop

$1.25 for Double scoop

Proceeds $221.75

<em>What we want to know:</em>

We want to account for Double scoops($1.25) and Single scoops($1) and end up with exactly <u><em>200 ice cream scoops.</em></u> So if we have exactly 200 how many of each cone were sold.

<em>Reference:</em>

100 x $1= $100

100 x $1.25= $125

200 x $1= $200

200 x $1.25= 250

<em>Work:</em>

So using the reference above we can see that if you split 200 even we get $225 which is very close to $221.75.

So $225-$221.75= 3.25

If we have 117 and 83 we get 220.75 so how do we get that 1 dollar more. tax i guess....





3 0
3 years ago
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