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Viktor [21]
4 years ago
5

Help me plz i need help !!!!!

Mathematics
1 answer:
trasher [3.6K]4 years ago
4 0
Help with what I'm here to help you??
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g A manufacturer of sprinkler systems designed for fire protection claims that the average activating temperature is at least 13
Luden [163]

Answer:

There is enough evidence to reject the manufacturer’s claim and  the standardized test statistic z is -3.43

Step-by-step explanation:

A manufacturer of sprinkler systems designed for fire protection claims that the average activating temperature is at least 135°F.

So, Null hypothesis:H_0:\mu \geq 135

Alternate hypothesis :H_a:\mu

To test this claim, you randomly select a sample of 32 systems and find the mean activation temperature to be 133°F.

x=133

n = 32

Population Standard deviation =\sigma = 3.3^{\circ}F

Formula :z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

z=\frac{133-135}{\frac{3.3}{\sqrt{32}}}\\\\z=-3.428

z=-3.43

Refer the z table for p value

p value = 0.0003

\alpha = 0.10

p value < α

So, we failed to accept null hypothesis

Hence there is enough evidence to reject the manufacturer’s claim and  the standardized test statistic z is -3.43

6 0
3 years ago
A large serving of soup from a take-out restaurant is 4/5 liter. The restaurant has 3 liters of soup. The diagram models the num
shutvik [7]

Answer:

The answer is 2 and 2/5 i hope this can help.

Step-by-step explanation:

8 0
3 years ago
What is -4 + 3/2= ?
butalik [34]

-4 + 3/2=

Exact Form:

-5/2

Decimal Form:

-2.5

Mixed Number Form:

-2  1/2

3 0
4 years ago
Read 2 more answers
Please answer correctly!
VikaD [51]

Answer:

C ≈-1 and x≈8.1

Step-by-step explanation:


-sqrt(x + 2) - 3 = 4 - 2 abs(x - 3)

Using graphing technology, (see the graph)  they intersect at x≈-1 and x≈8.1

3 0
3 years ago
Read 2 more answers
Fill in the monthly budget, assume your gross monthly is $550 from your part time job. in your spare time you walk a dog for an
BartSMP [9]

Answer:

it depends what kind of food you want the car you own and the price of gifts, you need to say how much is everything

4 0
3 years ago
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