Advanced Placement (AP) High School

EASY 100 PTS! THIS IS A TWO PART PROBLEM NOT MULTIPLE CHOICE

The distribution of the number of children per family in the United States is strongly skewed right with a mean of 2.5 children per family and a standard deviation of 1.3 children per family.

a) Without doing any calculations, which event is more likely? Explain.
Event A: Randomly selecting a family from the United States that has 3 or more children.
Event B: Randomly selecting 40 families from the United States and finding an average of 3 or more children.

b) The probability of one of the two events listed in part (a) can be calculated even though the distribution of the population is strongly skewed right. For which event can the probability be calculated? Explain.

c) Calculate the probability of the event that you selected in part (b).

Answers

Answer 1

Answer:

a) Event B

b) Event B

c) 0.649733

Explanation:

Related Questions

In sentence 15 (reproduced below), the writer wants to maintain credibility with the audience by using unbiased language.

Children are incredibly gullible when it comes to robots, as a recent study demonstrates.

Which of the following versions of the underlined text best accomplishes this goal?

A. (as it is now)

B. often the victims of robotic deception

C. particularly susceptible to robotic influence

D. so naive that they believe whatever robots tell them

E. not clever enough to outsmart robots

Answers

Answer:

C. particularly susceptible to robotic influence

Explanation:

Answer C

Correct. This version of the underlined text allows the writer to maintain credibility with the audience by using unbiased language. The writer effectively replaces the biased language in the original text with neutral, objective language that still conveys the writer’s message about children’s susceptibility to robotic influence.

Answer:

C

Explanation:

got it correct on progress check MCQ

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