Assume that 33.4% of people have sleepwalked. Assume that in a random sample of 1459 adults, 526 have sleepwalked.
1 answer:
Answer:
Step-by-step explanation:
Given that 33.4% of people have sleepwalked.
Sample size n =1459
Sample favourable persons = 526
Sample proportion p =
Sample proportion p is normal for large samples with mean = 0.334 and
std error =
a) P(526 or more of the 1459 adults have sleepwalked.)
b) Yes, because hardly 1.4% is the probability
c) 33.4 is very less compared to the average. Either sample should be improved representing the population or population mean should be increased accordingly.
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The simplified mathematical expressions with the first factor to the nearest tenth are:
7.8 x 10
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<h3>What are the simplified mathematical expressions ?</h3>Scientific notation is used to simplify large numbers in smaller numbers. In order to write a number in scientific notation , the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.
(8.6 x ) . (9.1 x
)
= (8.6 x 9.1) x
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(6.9 x ) . (4.8 x
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= 1.7 x 10 ÷ 8 x10²
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To learn more about scientific notation, please check: brainly.com/question/25334755
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