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Amiraneli [1.4K]
3 years ago
6

a box is filled with black (B), white (W), red (R), green (G), and pink (P) phone cases. A phone is selected at random

Mathematics
2 answers:
Yuri [45]3 years ago
6 0
Where's the rest of the question?
AnnyKZ [126]3 years ago
4 0
Whats the question, please clarify.

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An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From pre
Shtirlitz [24]

Answer:

Null Hypothesis, H_0 : \mu \leq 250 W  

Alternate Hypothesis, H_A : \mu > 250 W    

Step-by-step explanation:

We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

<u><em>Let </em></u>\mu<u><em> = mean power consumption of microwave ovens.</em></u>

So, Null Hypothesis, H_0 : \mu \leq 250 W  

Alternate Hypothesis, H_A : \mu > 250 W    

Here, <u>null hypothesis states tha</u>t the mean power consumption of microwave ovens is no more than 250 W.

On the other hand, <u>alternate hypothesis sates that</u> the mean power consumption of microwave ovens is more than 250 W.

The test statistics that would be used here is <u>One-sample z test statistics</u> as we know about the population standard deviation;

                       T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

Hence, this would be the appropriate hypotheses to determine if the manufacturer's claim appears reasonable.

5 0
3 years ago
Answer this question to get marked as brainliest!!!!
Brut [27]

Answer:

74 Degrees

Step-by-step explanation:

Mistakes were made when i said 37

8 0
3 years ago
Read 2 more answers
2nd question :) please help quick
marysya [2.9K]

Answer:

look id k which ans u want I m telling both

#5 such number could be <em><u>0</u></em> becoz it is not whole integer or positive

#6 there could be many numbers like

8.67676767.....

or

8.111111111111

etc....

4 0
3 years ago
A car tire has a radius of 10.4 inches. What distance will the tire travel after 20 rotations?
Ganezh [65]

Answer:

Distance traveled after 20 rotations = 1306.24 inches

Step-by-step explanation:

r = 10.4 inches

Distance traveled in one rotation = Circumference of the car tire

Circumference of the car tire = 2πr

                                                 = 2 * 3.14 * 10.4

                                                = 65.312 inches

Distance traveled after 20 rotations = 65.312 * 20

                                                            = 1306.24 inches

4 0
2 years ago
What is 2987654 × the square root of 8
elena-14-01-66 [18.8K]

Answer:

8365431.2

Step-by-step explanation:

you will multiply 2987654 * the square root of 8 which is equal to at least 2.8 (that is rounding of course)=8365431.2

5 0
3 years ago
Read 2 more answers
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