Answers: 3
Mathematics, 22.06.2019 04:30, RichardKing2376
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.
Answers: 1
Mathematics, 22.06.2019 04:50, landowatson123
Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter Ī¼. select the correct answer below: h0: Ī¼ā„40; ha: Ī¼< 40 h0: Ī¼ā¤40; ha: Ī¼> 40 h0: Ī¼ā 40; ha: Ī¼=40 h0: Ī¼=40; ha: Ī¼ā 40
Answers: 3
Find the value of the determinant
4 8 -3
4 0 6
5 61...
4 8 -3
4 0 6
5 61...
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