Mathematics, 04.03.2021 23:30, zahid79
A report claimed that 20% of respondents subscribe to the “5-second rule.” That is, they would eat a piece of food that fell onto the kitchen floor if it was picked up within 5 seconds. Assume this figure is accurate for the population of U. S. adults. Let = the proportion of people who subscribe to the 5-second rule in an SRS of size 80 from this population.
1. Calculate the mean and the standard deviation of the sampling distribution of .
2. Interpret the standard deviation from part (a).
3. Justify that it is appropriate to use a normal distribution to model the sampling distribution of .
4. In an SRS of size 80, only 10% subscribed to the 5-second rule. Does this result provide convincing evidence that the proportion of all U. S. adults who subscribe to the 5-second rule is less than 0.20? Calculate P( ≤ 0.10) and use this result to support your answer.
Answers: 1
Mathematics, 21.06.2019 16:00, emilyblaxton
Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7
Answers: 2
Mathematics, 21.06.2019 23:00, darrell1168
How many 2/5s are in 1 and 1/2 plz someone me right now
Answers: 1
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