Let μ1,μ2,μ3 be, respectively, the means of three normal distributions with a common, but unknown, variance σ2. in order to test, at the α = 0.05 significance level, the hypothesis h0: μ1 = μ2 = μ3 against all possible alternative hypotheses, we take a random sample of size 4 from each of these distributions. determine whether we accept or reject h0 if the observed values from the three distributions are, respectively, as follows:
x1 : 5 9 6 8
x2 : 11 13 10 12
x3 : 10 6 9 9

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.