9. If a sample is large enough that np > 10 and n(1-p) > 10 are both true, then the probability of a result can be estimated using the z-score. If this z-score method is used for a sample with n = 40 trials, and p = 0.45, then what value of x must be used in the z-score calculation to estimate P(x > 29)? O O 28.5 28 29 30 29.5

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9. If a sample is large enough that np > 10 and n(1-p) > 10 are both true,
then the probability of a result can be estimated using the z-score. If this
z-score method is used for a sample with n = 40 trials, and p = 0.45, then
what value of x must be used in the z-score calculation to estimate P(x >
29)?
O
O
28.5
28
29
30
29.5
Transcribed Image Text:9. If a sample is large enough that np > 10 and n(1-p) > 10 are both true, then the probability of a result can be estimated using the z-score. If this z-score method is used for a sample with n = 40 trials, and p = 0.45, then what value of x must be used in the z-score calculation to estimate P(x > 29)? O O 28.5 28 29 30 29.5
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