Answer to Question #61215 in Statistics and Probability for Victoria nangulohi

Question

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A)The weight of the adult females has a mean around ur kg and a standard deviation of 20kg .if the sample of 16 adult females choosen .

i) what is the probability that the average weight of these 16 randomly selected females will be below 60kg ?

ii)what is the probability that the average weight of these 16 randomly selected females will exceed 75kg?

iii)what is the probability that the average weight of these 16 randomly selected females will be between 65kg and 75 kg

B)in the city of Hongkong 70 of the people prefer a swamp candidate for a mayoral position .supposed 30 people from hongkong were sampled

i)what is the mean of the sampling distribution of P (sample proportion)

ii)what is the standard error of p?

iii)what is the probability that 80% of this sample will prefer a candidate from swamp?