The u. s. mint has a specification that pennies have a population mean weight of 2.5 g. assume that the weights of pennies are normally distributed and that σ = 0.0165 g. a random sample of n = 37 pennies produced in 1983 has a sample mean weight, \bar{x}= 2.499. interest centers on testing whether the population mean weight is less than 2.5 g. what is the p-value for the appropriate test?

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Now 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.