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algol13
2 years ago
9

Given

Mathematics
1 answer:
Nadya [2.5K]2 years ago
6 0

1334⅝7788865323557885558997776557895545788778999775564466⅞89757867798555⅝7788888898988976534756889986665444332333456777897556765689654688666678

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According to a college survey, 22% of all students work full time. Find the standard deviation for the random variable X, the nu
mixer [17]

Answer:

1.66

Step-by-step explanation:

Calculation to find the standard deviation for the random variable X of the number of students who work full time in samples of size

Using this formula

Standard deviation(X)=√np(1−p)

Where,

n represent the number of students=16

p represent the percentage of all students who work full time=22

Let plug in the formula

Standard deviation(X)=√16(0.22)(1−0.22)

Standard deviation(X)=√(3.52)(0.78)

Standard deviation(X)=√2.7456

Standard deviation(X)=1.656

Standard deviation(X)=1.66 (Approximately)

Therefore the standard deviation for the number of students who work full time in samples of size 16 will be 1.66

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3 years ago
Maria tests the effectiveness of an anti-depression drug by recruiting 500 participants and randomly assigning half e participan
Nady [450]

Answer:

D. The small p value and the small effect size suggest that the observed difference between the drug placebo groups are likely to be due to sampling error. This study should be replicated with a larger sample size.

Step-by-step explanation:

The p value is determined for any test before making a conclusion. If the p-value is smaller than critical value then we reject the null hypothesis which means that drug is not effective for the reducing depression. A very small p-value usually lesser than 0.05 indicates strong evidence against the null hypothesis.

6 0
3 years ago
Giveaway time!!! Get your free 50 points
Mumz [18]

Answer:

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Step-by-step explanation:

huh

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What is the common ratio for this geometric sequence 27,9,3,1<br>A.1/6<br>B.6<br>C.3<br>D.1/3
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It will be D!!!!!!!!!!!!!!!!!!!!!!!!!
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The table shows the distances traveled by a paper airplane.
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Step-by-step explanation:

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