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Sindrei [870]
3 years ago
15

Alice wanted to compare birthday cake prices in two supermarkets. She wrote down the daily prices for a few days and found that

the difference of the two sample means is $4.01. The standard deviation of the difference of the sample means is $5.46. The 95% confidence interval of the sample mean difference is between and
Mathematics
1 answer:
balu736 [363]3 years ago
8 0

The 95% confidence interval of the sample mean difference is between -8.02 and +16.38


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Which point on the graph is the solution to the system of linear equations? -2x=-y+4 x=-2
Elodia [21]

Answer:

The solution is (-2, 0)

Step-by-step explanation:

Re-write -2x=-y+4 x=-2 in column form:

x=-2

-2x=-y+4

Next, substitute -2 for x in the second equation:

-2(-2) = -y + 4, or:

4 = -y + 4.  Thus, y must be 0.

The solution is (-2, 0)

4 0
3 years ago
Julia's great dane weighs 45 kgand Jake's chihuahua weighs 15 kg. How much bigger, as a percentage, is julia's dog?
jarptica [38.1K]
45kg-15kg=30kg Percentage: 30kg=0.3% Percentage =0.3%
8 0
3 years ago
Read 2 more answers
What is 6 feet, 2 inches plus 4 feet, 8 inches ?
zysi [14]

Answer:

10 ft 10 in

Step-by-step explanation:

Note that there are 12 inch in 1 feet. Add corresponding numbers together:

6 ft 2 in + 4 ft 8 in = (6 ft + 4 ft) + (2 in + 8 in) = 10 ft + 10 in

10 ft 10 in is your answer.

~

5 0
3 years ago
Read 2 more answers
Bob raises Guinea Pigs and Chinchillas on his beachfront oasis. There are a total of 60,005 animals at the oasis. The number of
raketka [301]
Let named variables as you said g- guinea pigs and c- chinchillas
System of equation is:

First is:   c+ g = 60,005 
Second is:   c= 2g+5

When we replace second in first we get:

2g+5+g = 60,005 => 3g+5= 60,005 => 3g= 60,000

g=60.000/3 = 20,000 => g=20,000

When this result we replace in the second equation we get

c= 2 * 20,000 +5= 40,000+5 = 40,005

c= 40,005

Good luck!!!!




6 0
3 years ago
How do you find angles on a rhombus
Naily [24]

Answer:

you can try adding the adding angles up to 180

or if its graphed you can count the units

Step-by-step explanation:

and know that all four sides are congruent and diagonals are perpendicular

i tried :)

6 0
3 years ago
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