Answers: 1
Mathematics, 22.06.2019 04:30
Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.
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Mathematics, 22.06.2019 04:30
Which expression represent a number that is one fourth as great as 10-2a. (10-2)+4b. (10-2)Γ·4c. (10-2)-4d. (10-2)Γ4
Answers: 1
Mathematics, 22.06.2019 04:50
The random variable x has probability density function f (x) = k(βxΒ²+5xβ4) 1 β€ x β€ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x β€ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.
Answers: 3
Plz can someone answer this for me
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