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zvonat [6]
3 years ago
6

Help me please what do they mean?

Mathematics
1 answer:
gogolik [260]3 years ago
6 0
Ask google it will help alot
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You are planning a May camping trip to Denali National Park in Alaska and want to make sure your sleeping bag is warm enough. Th
Goshia [24]

The probability that this bag will be warm enough on a randomly

selected May night at the park is 0.8106 ⇒ answer C

Step-by-step explanation:

You are planning a May camping trip to Denali National Park in Alaska

and want to make sure your sleeping bag is warm enough.

The average low temperature in the park for May follows a normal

distribution

The given is:

1. The mean is 32°F

2. The standard deviation is 8°F

3. One sleeping bag you are considering advertises that it is good for

   temperatures down to 25°F (x ≥ 25)

At first let us find the z-score

∵ z = (x - μ)/σ, where x is the score, μ is the mean, σ is standard deviation

∵ μ = 32°F , σ = 8°F , x = 25°F

- Substitute these values in the rule

∴ z = \frac{25-32}{8}=-0.875

Now let us find the corresponding area of z-score in the normal

distribution table

∵ The corresponding area of z = -0.875 is 0.18943

∵ For P(x ≥ 25) the area to the right is needed

∵ P(x ≥ 25) = 1 - 0.18943 = 0.8106

∴ P(x ≥ 25) = 0.8106

The probability that this bag will be warm enough on a randomly

selected May night at the park is 0.8106

Learn more:

You can learn more about mean and standard deviation in brainly.com/question/6073431

#LearnwithBrainly

3 0
3 years ago
What is the first step in solving the equation 2/3x+1/3+2=5?
julsineya [31]

The first step is combining like terms. On the left side of the equation add all the numbers together that don't have and x (1/3 +2)

Hope this helped! Let me know if there is anything else I can do!

7 0
3 years ago
How do i find the pythagorean theorem of this
Alisiya [41]
Look it up on safari
8 0
3 years ago
It's not multiple choice, anyone know the answer I'm stuck :(
lana66690 [7]

Answer:

regular polygon of 9 sides has 9 lines of symmetry

7 0
3 years ago
Read 2 more answers
136 is 85% of what number?
Arte-miy333 [17]
X * 0.85 = 136
           x = 136/0.85
           x = 160

hope this helps :)

3 0
3 years ago
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