FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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np̂ ≥ 10 and n(1-p̂) ≥ 10
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n ≥ 30
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10% condition
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random sample
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Detailed explanation-1: -We can use a standard normal table or calculator to find P(Z < 2.5) = 0.9938. Therefore, the probability that a random sample of 400 adults results in between 20% and 25% not owning a credit card is approximately 99.38%.
Detailed explanation-2: -The probability is 0.2877 (Round to four decimal places as needed.) Interpret this probability If 100 different random samples of 600 adults were obtained, one would expect 29 to result in more than 27% not owning a credi (Round to the nearest integer as needed.)
Detailed explanation-3: -Determine the standard deviation of the sampling distribution of p. GA = 0.023 (Round to three decimal places as needed.) (b) What is the probability that in a random sample of 400 adults, more than 32% do not own a credit card? The probability is 0.0961 (Round to four decimal places as needed.)