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jonallere04
19.01.2022 •
Mathematics
The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $38 and the standard deviation is $10. The distribution is not Normal: many households pay a base rate for low-speed access, but some pay much more for faster connections. A sample survey asks an SRS of 500 households with Internet access how much they pay. Let¯x be the mean amount paid.
(a) What are the mean and standard deviation of the sampling distribution of¯x ?
(b) Explain why you can't determine the probability that the amount a randomly selected household pays for access to the Internet exceeds $55.
(c) What is the shape of the sampling distribution of x? Justify your answer.
(d) Find the probability that the average fee paid by the sample of households exceeds $55.
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Ответ:
4^2 = 16
q^pq = 2^4*2
= 2^16 =
65,536
Step-by-step explanation: