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makkiz [27]
3 years ago
15

What is 2+2. Will give brainliest!

Mathematics
2 answers:
Misha Larkins [42]3 years ago
8 0
Answer :4

1+1+1+1=4
irina1246 [14]3 years ago
4 0

Answer:

4

Step-by-step explanation:

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A company claims that the mean weight per apple they ship is 120 grams with a standard deviation of 12 grams. Data generated fro
Veronika [31]

Answer:

There is no sufficient evidence to reject the company's claim at the significance level of 0.05

Step-by-step explanation:

Let \mu be the true mean weight per apple the company ship.  We want to test the next hypothesis

H_{0}:\mu=120 vs H_{1}:\mu\neq 120 (two-tailed test).

Because we have a large sample of size n = 49 apples randomly selected from a shipment, the test statistic is given by

Z=\frac{\bar{X}-120}{\sigma/\sqrt{n}} which is normally distributed. The observed value is  

z_{0}=\frac{122.5-120}{12/\sqrt{49}}=1.4583. The rejection region for \alpha = 0.05 is given by RR = {z| z < -1.96 or z > 1.96} where the area below -1.96 and under the standard normal density is 0.025; and the area above 1.96 and under the standard normal density is 0.025 as well. Because the observed value 1.4583 does not fall inside the rejection region RR, we fail to reject the null hypothesis.

5 0
3 years ago
What is the volume of a square pyramid with a base side length of 9 and a height of 11.
andre [41]
V = 297 for a square pyramid, I hope its right..
3 0
3 years ago
Read 2 more answers
The perimeter of the square kitchen floor measures 48 feet what is the area of the kitchen floor
Leni [432]

Answer:

the answer is 144 feet

Step-by-step explanation:

to find the how long each sides of the square is divide 48 by 4 (because that's how many sides there are on a square). by doing that you get 12

to find the area of the square you do A= lw which in this case it would look something like this:

A= 12(12) you use 12 twice because square sides are always equal

then you multiply which gives you A= 144

5 0
3 years ago
An architects blue print for a new house shows the kitchen.being.7 inches wide if the scale used to create the blue print is 0.5
ASHA 777 [7]
7/.5=14
14 feet wide is the kitchen
3 0
3 years ago
:) please help me. Thank you
Lerok [7]

Answer:

it's the 3rd one

Step-by-step explanation:

i used m ath way

8 0
3 years ago
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