The best guess for a population mean, mu, is the sample mean, x. If a true popul

Question

The best guess for a population mean, mu, is the sample mean, x. If a true population mean is 200, then a sample mean from that population could not be 150. A surv has about 95.4490 of its values within 2 standard deviation of its mean. Buy normal random variable has about 95.4490 of its values within two standard deviations of its mean. Both the mean and median for a sarv have value O. If x has mean 80 and standard deviation 8, then the z value for x = 120 is 4.5. If x is binomial with n = 72 and p = 2/3, then mu_x = 48. as in #37, sigma_x = 16. If z_c = -2.33 and z_0 = -3, then at infinity = 0.01, a claimed value was too large. If z_c = 1.64 and z_0 = 0.87 then at infinity = 0.05, one cannot safely conclude that a claimed value was too small. If x = 500 and the claimed value for mu is 400, then the true value for mu must be more than 400.

Explanation / Answer

31-True
32-False
33-False
34-True
35-False
36-False
37-True
38-False

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