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Margarita [4]
3 years ago
7

Are everyone's fingers broken ??

Mathematics
2 answers:
Setler [38]3 years ago
4 0

Answer:

umm i think its 21

Step-by-step explanation:

jk its 1

Aleksandr [31]3 years ago
4 0
My fingers are not broken actually.
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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.972 g and a standard deviation
zalisa [80]

Answer:

P( ¯ x < 0.929 g) = 0.1867

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 0.972, \sigma = 0.289, n = 36, s = \frac{0.289}{\sqrt{6}} = 0.0482

Assuming that the given mean and standard deviation have NOT changed, find the probability of randomly selecting 36 cigarettes with a mean of 0.929 g or less. P( ¯ x < 0.929 g) =

This is the pvalue of Z when X = 0.929. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.929 - 0.972}{0.0482}

Z = -0.89

Z = -0.89 has a pvalue of 0.1867. So

P( ¯ x < 0.929 g) = 0.1867

7 0
3 years ago
The amount of money in a bank is changing according to the equation
Pachacha [2.7K]

Answer:

Go to photo math thank me later

Step-by-step explanation:

5 0
3 years ago
can anyone help pleasw
Tresset [83]
I don’t know for real sorry hope you find it
5 0
3 years ago
10. Read the following word problem, then choose which linear equation models the problem.
coldgirl [10]

Answer:

D. ( 2w+6). (w)

i tried my best

hope this is the answer

stay at home stay safe

8 0
3 years ago
What is 2x566!!!!!!!!!!!
Effectus [21]
That would be 1,132





Please mark me brainliest.
8 0
3 years ago
Read 2 more answers
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