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fredd [130]
3 years ago
11

Which of the following are required for an independent random sample? Check all that apply. Every time an individual is selected

for the sample, each of the remaining individuals has a lower chance of being included. The probability of being included in the sample is the same for all members of the population of interest. The probability of being selected first for the sample is the same as the probability of being selected last. Every time an individual is selected for the sample, each of the remaining individuals has a higher chance of being included.
Mathematics
1 answer:
zysi [14]3 years ago
6 0

Answer:

the probability of being included in the sample is same for all members of the population of interest. the probability of being selected first for the sample is same as the probability of being selected last

Step-by-step explanation:

A sample is said to be independent random sample if each member of the population has equal chance of being selected.

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A book store has twice as many history books as science books. The store has 81 history and science books altogether how many of
atroni [7]

let h= history books

science books = s

h=2s  there are 2 times as many history as science so to get them equal we double the science

h+s=81    there are 81 total history and science books

2s+s=81   substitute 2s for h in the above equation

3s = 81   combine like terms

s = 27

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h=2s

h=2(27)

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The mathematics department of a college has 7 male​ professors, 6 female​ professors, 12 male teaching​ assistants, and 7 female
Natalka [10]

Answer:

0.78125 or 78.125%

Step-by-step explanation:

Male professors = 7

Female professors = 6

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Female T.A. = 7

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The probability that the selected person is a professor or a male is given by the probability that the person is a professor added to the probability that the person is a male, minus the probability that the person is a male professor:

P( P\ or\ M) = P(P) +P(M) - P(P\ and\ M)\\P( P\ or\ M) =\frac{7+6}{32}+ \frac{7+12}{32}- \frac{7}{32} \\P( P\ or\ M) = 0.78125 = 78.125\%

The probability is 0.78125 or 78.125%

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