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icang [17]
3 years ago
11

A certain region of America with over 500,000 households has a mean household income of $70,000 with a standard deviation of $20

,000. Economists plan to take random samples of 625 households and calculate the sample mean income for each sample. Calculate the mean of the sampling distribution of x-bar.
Mathematics
1 answer:
Llana [10]3 years ago
3 0

Answer:

Mean = 70,000 dollars

SD = 800 dollars

For Khan Academy

Step-by-step explanation:

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A pyramid has a volume of 180 cubic inches, a length of 9 inches, and a width of 5 inches.
beks73 [17]
Has a height of 12, because 12*9*5=180
5 0
4 years ago
Anybody can help me?
irinina [24]

Graph C depicts the relation between No. of sweaters ( Nombre de chandails vendus ) and the fund raised in the campaign (Campagne de financements )

<h3>What is a Graph ?</h3>

Graph is the statistical representation of data , It helps to observe large data systematically.

It is given that

Sale of one sweater gives $3

The relation between the amount raised for funding , M and the number of shirts sold , n is given by

M = 3n

It has to be found that which graph exactly depicts the relation and the condition as given

Graph C depicts the relation given as , The graph is between No. of sweaters ( Nombre de chandails vendus ) and the fund raised in the campaign (Campagne de financements ) , and for every 100 sweater , $300 is earned .

Therefore Graph C is the answer.

To know more about Graph

brainly.com/question/14375099

#SPJ1

6 0
2 years ago
31 days x 160 residents=
k0ka [10]

Answer:

4960?

Step-by-step explanation:

31 times 160 = 4960

5 0
3 years ago
A pound of cherries is normally $5.00. Today there is a 20% discount. What is the sale price
Kruka [31]
The Answer Is $4.00
Hope This Helps!

6 0
4 years ago
Read 2 more answers
Baseball hat is on sale for 15% off, which is $2.70. How much does the baseball hat cost at full price?
lidiya [134]

Answer:

27.9 dollars

Step-by-step explanation:

2.70= 15 percent

2.70x2=5.4=30 percent

5.4+2.70=8.1=45 percent

8.1x2=16.2=95 percent

95 percent + 15 percent=18.9

18.9=105 percent

in order to subtract 5 percent we need to find 5 percent by dividing 2.70 by 3

which = .9

18.9+9=27.9

100 percent is 27.9 dollars

4 0
3 years ago
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