2 years ago

Hi, may someone help me with this?

1 answer:

7 0

I’m not going to tell u the answer but I will try to help you. First off try multiplying then also try to divide. You should get your answer

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MArishka [77]

Answer:

2. 0.2x

Step-by-step explanation:

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2 years ago

adelina 88 [10]

I think there are 77 if i can add correctly XD

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2 years ago

hammer [34]

If they are all a foot long then she should have 32 pieces of Chain

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2 years ago

matrenka [14]

The experimental p=8/48=1/6

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3 years ago

valentina_108 [34]

Answer:

Mean = 21.3

Standard Deviation = 2.48

Step-by-step explanation:

We are given the following in the question:

p = 71% = 0.71

Sample size, n = 30

We have to find the mean and the standard deviation of those that wear glasses.

$\text{Mean} = np\\=30(0.71)\\=21.3$

Thus, the mean of those who wear glasses is 21.3

$\text{Standard deviation} = \sqrt{npq}\\=\sqrt{np(1-p)}\\=\sqrt{30\times 0.71\times (1-0.71)}\\=2.48$

Thus, the standard deviation of those who wear glasses is 2.48

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2 years ago